55038445 has 32 divisors (see below), whose sum is σ = 83773440. Its totient is φ = 33714240.

The previous prime is 55038437. The next prime is 55038461. The reversal of 55038445 is 54483055.

It is not a de Polignac number, because 55038445 - 2³ = 55038437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55038445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21504 + ... + 23926.

It is an arithmetic number, because the mean of its divisors is an integer number (2617920).

Almost surely, 2^55038445 is an apocalyptic number.

55038445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55038445 is a deficient number, since it is larger than the sum of its proper divisors (28734995).

55038445 is a wasteful number, since it uses less digits than its factorization.

55038445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505.

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 55038445 is about 7418.7899956799. The cubic root of 55038445 is about 380.3838342306.

The spelling of 55038445 in words is "fifty-five million, thirty-eight thousand, four hundred forty-five".