55234521 has 16 divisors (see below), whose sum is σ = 82984320. Its totient is φ = 36303120.

The previous prime is 55234493. The next prime is 55234583. The reversal of 55234521 is 12543255.

It is a happy number.

It is not a de Polignac number, because 55234521 - 2⁷ = 55234393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55234721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12490 + ... + 16323.

It is an arithmetic number, because the mean of its divisors is an integer number (5186520).

Almost surely, 2^55234521 is an apocalyptic number.

It is an amenable number.

55234521 is a deficient number, since it is larger than the sum of its proper divisors (27749799).

55234521 is a wasteful number, since it uses less digits than its factorization.

55234521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28893 (or 28887 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 55234521 is about 7431.9930705027. The cubic root of 55234521 is about 380.8350082309.

Adding to 55234521 its reverse (12543255), we get a palindrome (67777776).

It can be divided in two parts, 55234 and 521, that added together give a palindrome (55755).

The spelling of 55234521 in words is "fifty-five million, two hundred thirty-four thousand, five hundred twenty-one".