91954457 has 4 divisors (see below), whose sum is σ = 105090816. Its totient is φ = 78818100.

The previous prime is 91954441. The next prime is 91954481. The reversal of 91954457 is 75445919.

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.

It is a cyclic number.

It is not a de Polignac number, because 91954457 - 2⁴ = 91954441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91954427) 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, 6568169 + ... + 6568182.

It is an arithmetic number, because the mean of its divisors is an integer number (26272704).

Almost surely, 2^91954457 is an apocalyptic number.

It is an amenable number.

91954457 is a deficient number, since it is larger than the sum of its proper divisors (13136359).

91954457 is a wasteful number, since it uses less digits than its factorization.

91954457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13136358.

The product of its digits is 226800, while the sum is 44.

The square root of 91954457 is about 9589.2886597495. The cubic root of 91954457 is about 451.3612394475.

The spelling of 91954457 in words is "ninety-one million, nine hundred fifty-four thousand, four hundred fifty-seven".