61508312 has 32 divisors (see below), whose sum is σ = 123606000. Its totient is φ = 28591104.

The previous prime is 61508311. The next prime is 61508327. The reversal of 61508312 is 21380516.

61508312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61508311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8564 + ... + 14012.

Almost surely, 2^61508312 is an apocalyptic number.

It is an amenable number.

61508312 is an abundant number, since it is smaller than the sum of its proper divisors (62097688).

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

61508312 is a wasteful number, since it uses less digits than its factorization.

61508312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555 (or 5551 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 61508312 is about 7842.7235065378. The cubic root of 61508312 is about 394.7401206770.

Adding to 61508312 its reverse (21380516), we get a palindrome (82888828).

The spelling of 61508312 in words is "sixty-one million, five hundred eight thousand, three hundred twelve".