90542537 has 12 divisors (see below), whose sum is σ = 94946688. Its totient is φ = 86322600.

The previous prime is 90542533. The next prime is 90542549. The reversal of 90542537 is 73524509.

It is not a de Polignac number, because 90542537 - 2² = 90542533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90542497 and 90542506.

It is not an unprimeable number, because it can be changed into a prime (90542531) 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 11 ways as a sum of consecutive naturals, for example, 67568 + ... + 68894.

It is an arithmetic number, because the mean of its divisors is an integer number (7912224).

Almost surely, 2^90542537 is an apocalyptic number.

It is an amenable number.

90542537 is a deficient number, since it is larger than the sum of its proper divisors (4404151).

90542537 is a wasteful number, since it uses less digits than its factorization.

90542537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460 (or 1429 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 90542537 is about 9515.3842276600. The cubic root of 90542537 is about 449.0391630564.

The spelling of 90542537 in words is "ninety million, five hundred forty-two thousand, five hundred thirty-seven".