55940923 has 4 divisors (see below), whose sum is σ = 56085120. Its totient is φ = 55796728.

The previous prime is 55940903. The next prime is 55940947. The reversal of 55940923 is 32904955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32904955 = 5 ⋅6580991.

It is a cyclic number.

It is not a de Polignac number, because 55940923 - 2¹⁷ = 55809851 is a prime.

It is a super-3 number, since 3×55940923³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55940903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71515 + ... + 72292.

It is an arithmetic number, because the mean of its divisors is an integer number (14021280).

Almost surely, 2^55940923 is an apocalyptic number.

55940923 is a deficient number, since it is larger than the sum of its proper divisors (144197).

55940923 is a wasteful number, since it uses less digits than its factorization.

55940923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144196.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 55940923 is about 7479.3664838675. The cubic root of 55940923 is about 382.4516532227.

The spelling of 55940923 in words is "fifty-five million, nine hundred forty thousand, nine hundred twenty-three".