55601945 has 16 divisors (see below), whose sum is σ = 78115968. Its totient is φ = 37196160.

The previous prime is 55601939. The next prime is 55601947. The reversal of 55601945 is 54910655.

It is not a de Polignac number, because 55601945 - 2¹⁰ = 55600921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (55601947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17939 + ... + 20808.

It is an arithmetic number, because the mean of its divisors is an integer number (4882248).

Almost surely, 2^55601945 is an apocalyptic number.

It is an amenable number.

55601945 is a deficient number, since it is larger than the sum of its proper divisors (22514023).

55601945 is a wasteful number, since it uses less digits than its factorization.

55601945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38800.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 55601945 is about 7456.6711741903. The cubic root of 55601945 is about 381.6775899528.

The spelling of 55601945 in words is "fifty-five million, six hundred one thousand, nine hundred forty-five".