55437438 has 32 divisors (see below), whose sum is σ = 126936576. Its totient is φ = 15811488.

The previous prime is 55437427. The next prime is 55437451. The reversal of 55437438 is 83473455.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55437396 and 55437405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41895 + ... + 43197.

It is an arithmetic number, because the mean of its divisors is an integer number (3966768).

Almost surely, 2^55437438 is an apocalyptic number.

55437438 is an abundant number, since it is smaller than the sum of its proper divisors (71499138).

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

55437438 is a wasteful number, since it uses less digits than its factorization.

55437438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328.

The product of its digits is 201600, while the sum is 39.

The square root of 55437438 is about 7445.6321424040. The cubic root of 55437438 is about 381.3008006122.

The spelling of 55437438 in words is "fifty-five million, four hundred thirty-seven thousand, four hundred thirty-eight".