55145964 has 24 divisors (see below), whose sum is σ = 128826880. Its totient is φ = 18360144.

The previous prime is 55145963. The next prime is 55145983. The reversal of 55145964 is 46954155.

It is not an unprimeable number, because it can be changed into a prime (55145963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10257 + ... + 14679.

Almost surely, 2^55145964 is an apocalyptic number.

It is an amenable number.

55145964 is an abundant number, since it is smaller than the sum of its proper divisors (73680916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55145964 is a wasteful number, since it uses less digits than its factorization.

55145964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469 (or 5467 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The square root of 55145964 is about 7426.0328574549. The cubic root of 55145964 is about 380.6313696050.

The spelling of 55145964 in words is "fifty-five million, one hundred forty-five thousand, nine hundred sixty-four".