55535247 has 32 divisors (see below), whose sum is σ = 85017600. Its totient is φ = 35809344.

The previous prime is 55535239. The next prime is 55535257. The reversal of 55535247 is 74253555.

It is not a de Polignac number, because 55535247 - 2³ = 55535239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55535257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135579 + ... + 135987.

It is an arithmetic number, because the mean of its divisors is an integer number (2656800).

Almost surely, 2^55535247 is an apocalyptic number.

55535247 is a deficient number, since it is larger than the sum of its proper divisors (29482353).

55535247 is a wasteful number, since it uses less digits than its factorization.

55535247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 566 counting only the distinct ones).

The product of its digits is 105000, while the sum is 36.

The square root of 55535247 is about 7452.1974611520. The cubic root of 55535247 is about 381.5249135322.

The spelling of 55535247 in words is "fifty-five million, five hundred thirty-five thousand, two hundred forty-seven".