55515542 has 8 divisors (see below), whose sum is σ = 83304936. Its totient is φ = 27747232.

The previous prime is 55515533. The next prime is 55515547. The reversal of 55515542 is 24551555.

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

It is a junction number, because it is equal to n+sod(n) for n = 55515499 and 55515508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55515547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7598 + ... + 12990.

It is an arithmetic number, because the mean of its divisors is an integer number (10413117).

Almost surely, 2^55515542 is an apocalyptic number.

55515542 is a deficient number, since it is larger than the sum of its proper divisors (27789394).

55515542 is a wasteful number, since it uses less digits than its factorization.

55515542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10542.

The product of its digits is 25000, while the sum is 32.

The square root of 55515542 is about 7450.8752505998. The cubic root of 55515542 is about 381.4797840083.

The spelling of 55515542 in words is "fifty-five million, five hundred fifteen thousand, five hundred forty-two".