55424237 has 4 divisors (see below), whose sum is σ = 60462816. Its totient is φ = 50385660.

The previous prime is 55424231. The next prime is 55424263. The reversal of 55424237 is 73242455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55424237 - 2¹⁴ = 55407853 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 (55424231) 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, 2519273 + ... + 2519294.

It is an arithmetic number, because the mean of its divisors is an integer number (15115704).

Almost surely, 2^55424237 is an apocalyptic number.

It is an amenable number.

55424237 is a deficient number, since it is larger than the sum of its proper divisors (5038579).

55424237 is a wasteful number, since it uses less digits than its factorization.

55424237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038578.

The product of its digits is 33600, while the sum is 32.

The square root of 55424237 is about 7444.7455967279. The cubic root of 55424237 is about 381.2705325500.

It can be divided in two parts, 5542 and 4237, that added together give a palindrome (9779).

The spelling of 55424237 in words is "fifty-five million, four hundred twenty-four thousand, two hundred thirty-seven".