90745951 has 8 divisors (see below), whose sum is σ = 91794384. Its totient is φ = 89701440.

The previous prime is 90745891. The next prime is 90745961. The reversal of 90745951 is 15954709.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90745951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90745961) 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, 87331 + ... + 88363.

It is an arithmetic number, because the mean of its divisors is an integer number (11474298).

Almost surely, 2^90745951 is an apocalyptic number.

90745951 is a deficient number, since it is larger than the sum of its proper divisors (1048433).

90745951 is a wasteful number, since it uses less digits than its factorization.

90745951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 90745951 is about 9526.0669218728. The cubic root of 90745951 is about 449.3751838855.

The spelling of 90745951 in words is "ninety million, seven hundred forty-five thousand, nine hundred fifty-one".