55012530 has 16 divisors (see below), whose sum is σ = 132030144. Its totient is φ = 14670000.

The previous prime is 55012511. The next prime is 55012537. The reversal of 55012530 is 3521055.

It is a junction number, because it is equal to n+sod(n) for n = 55012497 and 55012506.

It is not an unprimeable number, because it can be changed into a prime (55012537) 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, 916846 + ... + 916905.

It is an arithmetic number, because the mean of its divisors is an integer number (8251884).

Almost surely, 2^55012530 is an apocalyptic number.

55012530 is an abundant number, since it is smaller than the sum of its proper divisors (77017614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55012530 is a wasteful number, since it uses less digits than its factorization.

55012530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833761.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 55012530 is about 7417.0432114152. The cubic root of 55012530 is about 380.3241232738.

Adding to 55012530 its reverse (3521055), we get a palindrome (58533585).

The spelling of 55012530 in words is "fifty-five million, twelve thousand, five hundred thirty".