91504743 has 16 divisors (see below), whose sum is σ = 136346112. Its totient is φ = 54104000.

The previous prime is 91504711. The next prime is 91504757. The reversal of 91504743 is 34740519.

It is a cyclic number.

It is not a de Polignac number, because 91504743 - 2⁵ = 91504711 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91504783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32463 + ... + 35168.

It is an arithmetic number, because the mean of its divisors is an integer number (8521632).

Almost surely, 2^91504743 is an apocalyptic number.

91504743 is a deficient number, since it is larger than the sum of its proper divisors (44841369).

91504743 is a wasteful number, since it uses less digits than its factorization.

91504743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67686.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 91504743 is about 9565.8111522233. The cubic root of 91504743 is about 450.6242250534.

The spelling of 91504743 in words is "ninety-one million, five hundred four thousand, seven hundred forty-three".