55371573 has 32 divisors (see below), whose sum is σ = 86275200. Its totient is φ = 35054208.

The previous prime is 55371571. The next prime is 55371581. The reversal of 55371573 is 37517355.

It is a happy number.

55371573 is a `hidden beast` number, since 55 + 37 + 1 + 573 = 666.

It is not a de Polignac number, because 55371573 - 2¹ = 55371571 is a prime.

It is a super-2 number, since 2×55371573² = 6132022192988658, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55371571) 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, 42313 + ... + 43601.

It is an arithmetic number, because the mean of its divisors is an integer number (2696100).

Almost surely, 2^55371573 is an apocalyptic number.

It is an amenable number.

55371573 is a deficient number, since it is larger than the sum of its proper divisors (30903627).

55371573 is a wasteful number, since it uses less digits than its factorization.

55371573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1372 counting only the distinct ones).

The product of its digits is 55125, while the sum is 36.

The square root of 55371573 is about 7441.2077648726. The cubic root of 55371573 is about 381.1497334465.

The spelling of 55371573 in words is "fifty-five million, three hundred seventy-one thousand, five hundred seventy-three".