55438758 has 12 divisors (see below), whose sum is σ = 120117348. Its totient is φ = 18479580.

The previous prime is 55438711. The next prime is 55438759. The reversal of 55438758 is 85783455.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55438759) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1539948 + ... + 1539983.

It is an arithmetic number, because the mean of its divisors is an integer number (10009779).

Almost surely, 2^55438758 is an apocalyptic number.

55438758 is an abundant number, since it is smaller than the sum of its proper divisors (64678590).

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

55438758 is a wasteful number, since it uses less digits than its factorization.

55438758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079939 (or 3079936 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 55438758 is about 7445.7207844506. The cubic root of 55438758 is about 381.3038269248.

The spelling of 55438758 in words is "fifty-five million, four hundred thirty-eight thousand, seven hundred fifty-eight".