55444531 has 8 divisors (see below), whose sum is σ = 58771440. Its totient is φ = 52124928.

The previous prime is 55444481. The next prime is 55444541. The reversal of 55444531 is 13544455.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55444531 - 2²¹ = 53347379 is a prime.

It is a super-2 number, since 2×55444531² = 6148192035619922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55444493 and 55444502.

It is not an unprimeable number, because it can be changed into a prime (55444541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26340 + ... + 28366.

It is an arithmetic number, because the mean of its divisors is an integer number (7346430).

Almost surely, 2^55444531 is an apocalyptic number.

55444531 is a deficient number, since it is larger than the sum of its proper divisors (3326909).

55444531 is a wasteful number, since it uses less digits than its factorization.

55444531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653.

The product of its digits is 24000, while the sum is 31.

The square root of 55444531 is about 7446.1084466989. The cubic root of 55444531 is about 381.3170618930.

Adding to 55444531 its reverse (13544455), we get a palindrome (68988986).

The spelling of 55444531 in words is "fifty-five million, four hundred forty-four thousand, five hundred thirty-one".