55440651 has 32 divisors (see below), whose sum is σ = 91123200. Its totient is φ = 29272320.

The previous prime is 55440647. The next prime is 55440661. The reversal of 55440651 is 15604455.

It is not a de Polignac number, because 55440651 - 2² = 55440647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55440611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14665 + ... + 18053.

It is an arithmetic number, because the mean of its divisors is an integer number (2847600).

Almost surely, 2^55440651 is an apocalyptic number.

55440651 is a deficient number, since it is larger than the sum of its proper divisors (35682549).

55440651 is a wasteful number, since it uses less digits than its factorization.

55440651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 55440651 is about 7445.8479033620. The cubic root of 55440651 is about 381.3081668485.

The spelling of 55440651 in words is "fifty-five million, four hundred forty thousand, six hundred fifty-one".