90542502 has 16 divisors (see below), whose sum is σ = 201205680. Its totient is φ = 30180816.

The previous prime is 90542489. The next prime is 90542509. The reversal of 90542502 is 20524509.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90542509) 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 7 ways as a sum of consecutive naturals, for example, 838303 + ... + 838410.

It is an arithmetic number, because the mean of its divisors is an integer number (12575355).

Almost surely, 2^90542502 is an apocalyptic number.

90542502 is an abundant number, since it is smaller than the sum of its proper divisors (110663178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90542502 is a wasteful number, since it uses less digits than its factorization.

90542502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676724 (or 1676718 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 90542502 is about 9515.3823885328. The cubic root of 90542502 is about 449.0391051964.

The spelling of 90542502 in words is "ninety million, five hundred forty-two thousand, five hundred two".