90251837 has 8 divisors (see below), whose sum is σ = 97368096. Its totient is φ = 83160432.

The previous prime is 90251809. The next prime is 90251923. The reversal of 90251837 is 73815209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90251837 - 2¹² = 90247741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90251797 and 90251806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90251737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1718 + ... + 13544.

It is an arithmetic number, because the mean of its divisors is an integer number (12171012).

Almost surely, 2^90251837 is an apocalyptic number.

It is an amenable number.

90251837 is a deficient number, since it is larger than the sum of its proper divisors (7116259).

90251837 is a wasteful number, since it uses less digits than its factorization.

90251837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12427.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 90251837 is about 9500.0966837185. The cubic root of 90251837 is about 448.5580792843.

The spelling of 90251837 in words is "ninety million, two hundred fifty-one thousand, eight hundred thirty-seven".