61513010 has 32 divisors (see below), whose sum is σ = 121210992. Its totient is φ = 22337280.

The previous prime is 61513007. The next prime is 61513027. The reversal of 61513010 is 1031516.

It can be written as a sum of positive squares in 8 ways, for example, as 8994001 + 52519009 = 2999^2 + 7247^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61513010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4052 + ... + 11808.

Almost surely, 2^61513010 is an apocalyptic number.

61513010 is a deficient number, since it is larger than the sum of its proper divisors (59697982).

61513010 is a wasteful number, since it uses less digits than its factorization.

61513010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7838.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 61513010 is about 7843.0230141190. The cubic root of 61513010 is about 394.7501704942.

Adding to 61513010 its reverse (1031516), we get a palindrome (62544526).

The spelling of 61513010 in words is "sixty-one million, five hundred thirteen thousand, ten".