55740623 has 4 divisors (see below), whose sum is σ = 58674360. Its totient is φ = 52806888.

The previous prime is 55740589. The next prime is 55740673. The reversal of 55740623 is 32604755.

55740623 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: 32604755 = 5 ⋅6520951.

It is a cyclic number.

It is not a de Polignac number, because 55740623 - 2⁸ = 55740367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55740623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55740673) 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, 1466840 + ... + 1466877.

It is an arithmetic number, because the mean of its divisors is an integer number (14668590).

Almost surely, 2^55740623 is an apocalyptic number.

55740623 is a deficient number, since it is larger than the sum of its proper divisors (2933737).

55740623 is a wasteful number, since it uses less digits than its factorization.

55740623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933736.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 55740623 is about 7465.9643047633. The cubic root of 55740623 is about 381.9946432552.

The spelling of 55740623 in words is "fifty-five million, seven hundred forty thousand, six hundred twenty-three".