Search a number
-
+
51055051 = 297872237
BaseRepresentation
bin1100001011000…
…0100111001011
310120001212100211
43002300213023
5101032230201
65022141551
71156650355
oct302604713
9116055324
1051055051
1126901463
12151218b7
13a7676b8
146ad00d5
154737651
hex30b09cb

51055051 has 8 divisors (see below), whose sum is σ = 52906320. Its totient is φ = 49209888.

The previous prime is 51055031. The next prime is 51055057. The reversal of 51055051 is 15055015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51055051 - 219 = 50530763 is a prime.

It is a super-2 number, since 2×510550512 = 5213236465225202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51055057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21705 + ... + 23941.

It is an arithmetic number, because the mean of its divisors is an integer number (6613290).

Almost surely, 251055051 is an apocalyptic number.

51055051 is a deficient number, since it is larger than the sum of its proper divisors (1851269).

51055051 is a wasteful number, since it uses less digits than its factorization.

51055051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 51055051 is about 7145.2817299250. The cubic root of 51055051 is about 370.9763621259.

The spelling of 51055051 in words is "fifty-one million, fifty-five thousand, fifty-one".

Divisors: 1 29 787 2237 22823 64873 1760519 51055051