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212554051 = 1300916339
BaseRepresentation
bin11001010101101…
…01000101000011
3112210221212100021
430222311011003
5413403212201
633031434311
75160452053
oct1452650503
9483855307
10212554051
11a9a88006
125b225997
1335061538
142032d563
15139d8ea1
hexcab5143

212554051 has 4 divisors (see below), whose sum is σ = 212583400. Its totient is φ = 212524704.

The previous prime is 212554039. The next prime is 212554057. The reversal of 212554051 is 150455212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212554051 - 213 = 212545859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212554057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4840 + ... + 21178.

It is an arithmetic number, because the mean of its divisors is an integer number (53145850).

Almost surely, 2212554051 is an apocalyptic number.

212554051 is a deficient number, since it is larger than the sum of its proper divisors (29349).

212554051 is a wasteful number, since it uses less digits than its factorization.

212554051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29348.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 212554051 is about 14579.2335532428. The cubic root of 212554051 is about 596.7921869373.

The spelling of 212554051 in words is "two hundred twelve million, five hundred fifty-four thousand, fifty-one".

Divisors: 1 13009 16339 212554051