90515141 has 4 divisors (see below), whose sum is σ = 90903852. Its totient is φ = 90126432.

The previous prime is 90515099. The next prime is 90515153. The reversal of 90515141 is 14151509.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27772900 + 62742241 = 5270^2 + 7921^2 .

It is a cyclic number.

It is not a de Polignac number, because 90515141 - 2⁶ = 90515077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90515141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90515171) 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 3 ways as a sum of consecutive naturals, for example, 194006 + ... + 194471.

It is an arithmetic number, because the mean of its divisors is an integer number (22725963).

Almost surely, 2^90515141 is an apocalyptic number.

It is an amenable number.

90515141 is a deficient number, since it is larger than the sum of its proper divisors (388711).

90515141 is a wasteful number, since it uses less digits than its factorization.

90515141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388710.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 90515141 is about 9513.9445552305. The cubic root of 90515141 is about 448.9938689943.

The spelling of 90515141 in words is "ninety million, five hundred fifteen thousand, one hundred forty-one".