54640357 has 4 divisors (see below), whose sum is σ = 54681696. Its totient is φ = 54599020.

The previous prime is 54640351. The next prime is 54640361. The reversal of 54640357 is 75304645.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-54640357 is a prime.

It is a super-2 number, since 2×54640357² = 5971137226174898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54640351) 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, 18619 + ... + 21352.

It is an arithmetic number, because the mean of its divisors is an integer number (13670424).

Almost surely, 2^54640357 is an apocalyptic number.

It is an amenable number.

54640357 is a deficient number, since it is larger than the sum of its proper divisors (41339).

54640357 is a wasteful number, since it uses less digits than its factorization.

54640357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41338.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 54640357 is about 7391.9115930861. The cubic root of 54640357 is about 379.4645204798.

The spelling of 54640357 in words is "fifty-four million, six hundred forty thousand, three hundred fifty-seven".