90502541 has 2 divisors, whose sum is σ = 90502542. Its totient is φ = 90502540.

The previous prime is 90502537. The next prime is 90502561. The reversal of 90502541 is 14520509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54081316 + 36421225 = 7354^2 + 6035^2 .

It is a cyclic number.

It is not a de Polignac number, because 90502541 - 2² = 90502537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90502541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90502501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45251270 + 45251271.

It is an arithmetic number, because the mean of its divisors is an integer number (45251271).

Almost surely, 2^90502541 is an apocalyptic number.

It is an amenable number.

90502541 is a deficient number, since it is larger than the sum of its proper divisors (1).

90502541 is an equidigital number, since it uses as much as digits as its factorization.

90502541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 90502541 is about 9513.2823462778. The cubic root of 90502541 is about 448.9730342286.

The spelling of 90502541 in words is "ninety million, five hundred two thousand, five hundred forty-one".