91619253 has 12 divisors (see below), whose sum is σ = 144369888. Its totient is φ = 55526760.

The previous prime is 91619237. The next prime is 91619257. The reversal of 91619253 is 35291619.

It is not a de Polignac number, because 91619253 - 2⁴ = 91619237 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91619257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 462625 + ... + 462822.

It is an arithmetic number, because the mean of its divisors is an integer number (12030824).

Almost surely, 2^91619253 is an apocalyptic number.

It is an amenable number.

91619253 is a deficient number, since it is larger than the sum of its proper divisors (52750635).

91619253 is a wasteful number, since it uses less digits than its factorization.

91619253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925464 (or 925461 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 91619253 is about 9571.7946593102. The cubic root of 91619253 is about 450.8121186663.

The spelling of 91619253 in words is "ninety-one million, six hundred nineteen thousand, two hundred fifty-three".