90256051 has 4 divisors (see below), whose sum is σ = 90275472. Its totient is φ = 90236632.

The previous prime is 90256037. The next prime is 90256063. The reversal of 90256051 is 15065209.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90256051 - 2¹⁵ = 90223283 is a prime.

It is a super-2 number, since 2×90256051² = 16292309484229202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90256031) 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, 1845 + ... + 13561.

It is an arithmetic number, because the mean of its divisors is an integer number (22568868).

Almost surely, 2^90256051 is an apocalyptic number.

90256051 is a deficient number, since it is larger than the sum of its proper divisors (19421).

90256051 is a wasteful number, since it uses less digits than its factorization.

90256051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19420.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 90256051 is about 9500.3184683462. The cubic root of 90256051 is about 448.5650604694.

It can be divided in two parts, 902 and 56051, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 90256051 in words is "ninety million, two hundred fifty-six thousand, fifty-one".