55023907 has 4 divisors (see below), whose sum is σ = 55049040. Its totient is φ = 54998776.

The previous prime is 55023901. The next prime is 55023919. The reversal of 55023907 is 70932055.

It is a happy number.

55023907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70932055 = 5 ⋅14186411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55023907 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55023901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8932 + ... + 13777.

It is an arithmetic number, because the mean of its divisors is an integer number (13762260).

Almost surely, 2^55023907 is an apocalyptic number.

55023907 is a deficient number, since it is larger than the sum of its proper divisors (25133).

55023907 is a wasteful number, since it uses less digits than its factorization.

55023907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25132.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 55023907 is about 7417.8101215925. The cubic root of 55023907 is about 380.3503394183.

It can be divided in two parts, 5502 and 3907, that added together give a square (9409 = 97²).

The spelling of 55023907 in words is "fifty-five million, twenty-three thousand, nine hundred seven".