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193040051 = 613164591
BaseRepresentation
bin10111000000110…
…00111010110011
3111110020110011112
423200120322303
5343404240201
631053303535
74532545661
oct1340307263
9443213145
10193040051
1199a69936
1254794bab
1330cbb3a9
141b8cdc31
1511e320bb
hexb818eb3

193040051 has 4 divisors (see below), whose sum is σ = 196204704. Its totient is φ = 189875400.

The previous prime is 193040039. The next prime is 193040053. The reversal of 193040051 is 150040391.

It is a happy number.

193040051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150040391 = 216169431.

It is a cyclic number.

It is not a de Polignac number, because 193040051 - 222 = 188845747 is a prime.

It is a super-2 number, since 2×1930400512 = 74528922580165202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 193039999 and 193040026.

It is not an unprimeable number, because it can be changed into a prime (193040053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582235 + ... + 1582356.

It is an arithmetic number, because the mean of its divisors is an integer number (49051176).

Almost surely, 2193040051 is an apocalyptic number.

193040051 is a deficient number, since it is larger than the sum of its proper divisors (3164653).

193040051 is an equidigital number, since it uses as much as digits as its factorization.

193040051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164652.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 193040051 is about 13893.8853817066. The cubic root of 193040051 is about 577.9396286366.

The spelling of 193040051 in words is "one hundred ninety-three million, forty thousand, fifty-one".

Divisors: 1 61 3164591 193040051