55632639 has 8 divisors (see below), whose sum is σ = 74550400. Its totient is φ = 36901656.

The previous prime is 55632637. The next prime is 55632641. The reversal of 55632639 is 93623655.

It is an interprime number because it is at equal distance from previous prime (55632637) and next prime (55632641).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55632639 - 2¹ = 55632637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55632597 and 55632606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55632637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45997 + ... + 47190.

It is an arithmetic number, because the mean of its divisors is an integer number (9318800).

Almost surely, 2^55632639 is an apocalyptic number.

55632639 is a deficient number, since it is larger than the sum of its proper divisors (18917761).

55632639 is a wasteful number, since it uses less digits than its factorization.

55632639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93389.

The product of its digits is 145800, while the sum is 39.

The square root of 55632639 is about 7458.7290472305. The cubic root of 55632639 is about 381.7478096600.

The spelling of 55632639 in words is "fifty-five million, six hundred thirty-two thousand, six hundred thirty-nine".