90758261 has 4 divisors (see below), whose sum is σ = 99009024. Its totient is φ = 82507500.

The previous prime is 90758249. The next prime is 90758273. The reversal of 90758261 is 16285709.

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: 16285709 = 11 ⋅1480519.

It is an interprime number because it is at equal distance from previous prime (90758249) and next prime (90758273).

It is a cyclic number.

It is not a de Polignac number, because 90758261 - 2²² = 86563957 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 (90758561) 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, 4125365 + ... + 4125386.

It is an arithmetic number, because the mean of its divisors is an integer number (24752256).

Almost surely, 2^90758261 is an apocalyptic number.

It is an amenable number.

90758261 is a deficient number, since it is larger than the sum of its proper divisors (8250763).

90758261 is a wasteful number, since it uses less digits than its factorization.

90758261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250762.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 90758261 is about 9526.7130218140. The cubic root of 90758261 is about 449.3955027292.

It can be divided in two parts, 90758 and 261, that added together give a palindrome (91019).

The spelling of 90758261 in words is "ninety million, seven hundred fifty-eight thousand, two hundred sixty-one".