90515751 has 16 divisors (see below), whose sum is σ = 122611200. Its totient is φ = 59387328.

The previous prime is 90515743. The next prime is 90515773. The reversal of 90515751 is 15751509.

It is not a de Polignac number, because 90515751 - 2³ = 90515743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90515651) 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 15 ways as a sum of consecutive naturals, for example, 145920 + ... + 146538.

It is an arithmetic number, because the mean of its divisors is an integer number (7663200).

Almost surely, 2^90515751 is an apocalyptic number.

90515751 is a deficient number, since it is larger than the sum of its proper divisors (32095449).

90515751 is a wasteful number, since it uses less digits than its factorization.

90515751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318.

The product of its (nonzero) digits is 7875, while the sum is 33.

The square root of 90515751 is about 9513.9766133831. The cubic root of 90515751 is about 448.9948776125.

The spelling of 90515751 in words is "ninety million, five hundred fifteen thousand, seven hundred fifty-one".