61515052 has 24 divisors (see below), whose sum is σ = 109987920. Its totient is φ = 30095040.

The previous prime is 61515043. The next prime is 61515071. The reversal of 61515052 is 25051516.

61515052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 64902 + ... + 65842.

It is an arithmetic number, because the mean of its divisors is an integer number (4582830).

Almost surely, 2^61515052 is an apocalyptic number.

It is an amenable number.

61515052 is a deficient number, since it is larger than the sum of its proper divisors (48472868).

61515052 is a wasteful number, since it uses less digits than its factorization.

61515052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281 (or 1279 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 61515052 is about 7843.1531924348. The cubic root of 61515052 is about 394.7545385183.

Adding to 61515052 its reverse (25051516), we get a palindrome (86566568).

The spelling of 61515052 in words is "sixty-one million, five hundred fifteen thousand, fifty-two".