55453239 has 6 divisors (see below), whose sum is σ = 80099136. Its totient is φ = 36968820.

The previous prime is 55453199. The next prime is 55453241. The reversal of 55453239 is 93235455.

It is not a de Polignac number, because 55453239 - 2¹¹ = 55451191 is a prime.

It is a super-2 number, since 2×55453239² = 6150123431182242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55453289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3080727 + ... + 3080744.

It is an arithmetic number, because the mean of its divisors is an integer number (13349856).

Almost surely, 2^55453239 is an apocalyptic number.

55453239 is a deficient number, since it is larger than the sum of its proper divisors (24645897).

55453239 is a wasteful number, since it uses less digits than its factorization.

55453239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6161477 (or 6161474 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 55453239 is about 7446.6931587115. The cubic root of 55453239 is about 381.3370237966.

The spelling of 55453239 in words is "fifty-five million, four hundred fifty-three thousand, two hundred thirty-nine".