54357691 has 2 divisors, whose sum is σ = 54357692. Its totient is φ = 54357690.

The previous prime is 54357683. The next prime is 54357697. The reversal of 54357691 is 19675345.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54357691 - 2³ = 54357683 is a prime.

It is not a weakly prime, because it can be changed into another prime (54357697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27178845 + 27178846.

It is an arithmetic number, because the mean of its divisors is an integer number (27178846).

Almost surely, 2^54357691 is an apocalyptic number.

54357691 is a deficient number, since it is larger than the sum of its proper divisors (1).

54357691 is an equidigital number, since it uses as much as digits as its factorization.

54357691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 54357691 is about 7372.7668483413. The cubic root of 54357691 is about 378.8090390744.

The spelling of 54357691 in words is "fifty-four million, three hundred fifty-seven thousand, six hundred ninety-one".