61285512 has 32 divisors (see below), whose sum is σ = 158158080. Its totient is φ = 19769280.

The previous prime is 61285453. The next prime is 61285513. The reversal of 61285512 is 21558216.

It is a super-2 number, since 2×61285512² = 7511827962204288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61285512.

It is not an unprimeable number, because it can be changed into a prime (61285513) 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, 40443 + ... + 41930.

It is an arithmetic number, because the mean of its divisors is an integer number (4942440).

Almost surely, 2^61285512 is an apocalyptic number.

61285512 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

61285512 is an abundant number, since it is smaller than the sum of its proper divisors (96872568).

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

61285512 is a wasteful number, since it uses less digits than its factorization.

61285512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82413 (or 82409 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 61285512 is about 7828.5063709497. The cubic root of 61285512 is about 394.2629249888.

The spelling of 61285512 in words is "sixty-one million, two hundred eighty-five thousand, five hundred twelve".