54640945 has 8 divisors (see below), whose sum is σ = 65713536. Its totient is φ = 43616496.

The previous prime is 54640909. The next prime is 54640969. The reversal of 54640945 is 54904645.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54640945 - 2²³ = 46252337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9487 + ... + 14116.

It is an arithmetic number, because the mean of its divisors is an integer number (8214192).

Almost surely, 2^54640945 is an apocalyptic number.

It is an amenable number.

54640945 is a deficient number, since it is larger than the sum of its proper divisors (11072591).

54640945 is a wasteful number, since it uses less digits than its factorization.

54640945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24071.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 54640945 is about 7391.9513661820. The cubic root of 54640945 is about 379.4658816492.

The spelling of 54640945 in words is "fifty-four million, six hundred forty thousand, nine hundred forty-five".