61513011 has 24 divisors (see below), whose sum is σ = 102242400. Its totient is φ = 34909056.

The previous prime is 61513007. The next prime is 61513027. The reversal of 61513011 is 11031516.

It is not a de Polignac number, because 61513011 - 2² = 61513007 is a prime.

It is a super-2 number, since 2×61513011² = 7567701044572242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61513061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6111 + ... + 12663.

It is an arithmetic number, because the mean of its divisors is an integer number (4260100).

Almost surely, 2^61513011 is an apocalyptic number.

61513011 is a deficient number, since it is larger than the sum of its proper divisors (40729389).

61513011 is a wasteful number, since it uses less digits than its factorization.

61513011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6715 (or 6712 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 61513011 is about 7843.0230778699. The cubic root of 61513011 is about 394.7501726333.

Adding to 61513011 its reverse (11031516), we get a palindrome (72544527).

The spelling of 61513011 in words is "sixty-one million, five hundred thirteen thousand, eleven".