61401512 has 16 divisors (see below), whose sum is σ = 115384500. Its totient is φ = 30632320.

The previous prime is 61401511. The next prime is 61401533. The reversal of 61401512 is 21510416.

61401512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 61246276 + 155236 = 7826^2 + 394^2 .

It is a super-2 number, since 2×61401512² = 7540291351772288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61401511) 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 3 ways as a sum of consecutive naturals, for example, 4637 + ... + 12012.

Almost surely, 2^61401512 is an apocalyptic number.

It is an amenable number.

61401512 is a deficient number, since it is larger than the sum of its proper divisors (53982988).

61401512 is a wasteful number, since it uses less digits than its factorization.

61401512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17116 (or 17112 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 61401512 is about 7835.9116891399. The cubic root of 61401512 is about 394.5115192215.

Adding to 61401512 its reverse (21510416), we get a palindrome (82911928).

The spelling of 61401512 in words is "sixty-one million, four hundred one thousand, five hundred twelve".