51069258 has 32 divisors (see below), whose sum is σ = 120165120. Its totient is φ = 16021440.

The previous prime is 51069253. The next prime is 51069289. The reversal of 51069258 is 85296015.

It is a happy number.

51069258 is a `hidden beast` number, since 510 + 6 + 92 + 58 = 666.

It is a super-2 number, since 2×51069258² = 5216138225341128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51069253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26898 + ... + 28733.

It is an arithmetic number, because the mean of its divisors is an integer number (3755160).

Almost surely, 2^51069258 is an apocalyptic number.

51069258 is an abundant number, since it is smaller than the sum of its proper divisors (69095862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51069258 is a wasteful number, since it uses less digits than its factorization.

51069258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55659 (or 55653 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 51069258 is about 7146.2758133170. The cubic root of 51069258 is about 371.0107692498.

The spelling of 51069258 in words is "fifty-one million, sixty-nine thousand, two hundred fifty-eight".