53974691 has 4 divisors (see below), whose sum is σ = 54859584. Its totient is φ = 53089800.

The previous prime is 53974637. The next prime is 53974733. The reversal of 53974691 is 19647935.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53974691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53974621) 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, 442355 + ... + 442476.

It is an arithmetic number, because the mean of its divisors is an integer number (13714896).

Almost surely, 2^53974691 is an apocalyptic number.

53974691 is a deficient number, since it is larger than the sum of its proper divisors (884893).

53974691 is an equidigital number, since it uses as much as digits as its factorization.

53974691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884892.

The product of its digits is 204120, while the sum is 44.

The square root of 53974691 is about 7346.7469671958. The cubic root of 53974691 is about 377.9172551076.

The spelling of 53974691 in words is "fifty-three million, nine hundred seventy-four thousand, six hundred ninety-one".