61513016 has 16 divisors (see below), whose sum is σ = 116416440. Its totient is φ = 30468640.

The previous prime is 61513007. The next prime is 61513027. The reversal of 61513016 is 61031516.

It is a happy number.

It is a super-2 number, since 2×61513016² = 7567702274832512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61512982 and 61513000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35075 + ... + 36786.

Almost surely, 2^61513016 is an apocalyptic number.

It is an amenable number.

61513016 is a deficient number, since it is larger than the sum of its proper divisors (54903424).

61513016 is a wasteful number, since it uses less digits than its factorization.

61513016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71974 (or 71970 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 61513016 is about 7843.0233966245. The cubic root of 61513016 is about 394.7501833289.

It can be divided in two parts, 615 and 13016, that added together give a palindrome (13631).

The spelling of 61513016 in words is "sixty-one million, five hundred thirteen thousand, sixteen".