90037261 has 4 divisors (see below), whose sum is σ = 90379872. Its totient is φ = 89694652.

The previous prime is 90037247. The next prime is 90037279. The reversal of 90037261 is 16273009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16273009 = 191 ⋅85199.

It is a cyclic number.

It is not a de Polignac number, because 90037261 - 2⁵ = 90037229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90037231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170911 + ... + 171436.

It is an arithmetic number, because the mean of its divisors is an integer number (22594968).

Almost surely, 2^90037261 is an apocalyptic number.

It is an amenable number.

90037261 is a deficient number, since it is larger than the sum of its proper divisors (342611).

90037261 is a wasteful number, since it uses less digits than its factorization.

90037261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342610.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 90037261 is about 9488.7966044172. The cubic root of 90037261 is about 448.2023111681.

The spelling of 90037261 in words is "ninety million, thirty-seven thousand, two hundred sixty-one".