55437623 has 4 divisors (see below), whose sum is σ = 55477080. Its totient is φ = 55398168.

The previous prime is 55437601. The next prime is 55437631. The reversal of 55437623 is 32673455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55437623 - 2¹⁶ = 55372087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55437023) 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, 17540 + ... + 20457.

It is an arithmetic number, because the mean of its divisors is an integer number (13869270).

Almost surely, 2^55437623 is an apocalyptic number.

55437623 is a deficient number, since it is larger than the sum of its proper divisors (39457).

55437623 is a wasteful number, since it uses less digits than its factorization.

55437623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39456.

The product of its digits is 75600, while the sum is 35.

The square root of 55437623 is about 7445.6445657848. The cubic root of 55437623 is about 381.3012247574.

The spelling of 55437623 in words is "fifty-five million, four hundred thirty-seven thousand, six hundred twenty-three".