90910051 has 4 divisors (see below), whose sum is σ = 90962712. Its totient is φ = 90857392.

The previous prime is 90910037. The next prime is 90910081. The reversal of 90910051 is 15001909.

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 90910051 - 2¹¹ = 90908003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90909998 and 90910025.

It is not an unprimeable number, because it can be changed into a prime (90910081) 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, 23650 + ... + 27223.

It is an arithmetic number, because the mean of its divisors is an integer number (22740678).

Almost surely, 2^90910051 is an apocalyptic number.

90910051 is a deficient number, since it is larger than the sum of its proper divisors (52661).

90910051 is a wasteful number, since it uses less digits than its factorization.

90910051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52660.

The product of its (nonzero) digits is 405, while the sum is 25.

The square root of 90910051 is about 9534.6762399150. The cubic root of 90910051 is about 449.6458959149.

The spelling of 90910051 in words is "ninety million, nine hundred ten thousand, fifty-one".