61553130 has 32 divisors (see below), whose sum is σ = 148176000. Its totient is φ = 16364352.

The previous prime is 61553119. The next prime is 61553143. The reversal of 61553130 is 3135516.

It is a self number, because there is not a number n which added to its sum of digits gives 61553130.

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, 7531 + ... + 13409.

It is an arithmetic number, because the mean of its divisors is an integer number (4630500).

Almost surely, 2^61553130 is an apocalyptic number.

61553130 is an abundant number, since it is smaller than the sum of its proper divisors (86622870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61553130 is a wasteful number, since it uses less digits than its factorization.

61553130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6238.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 61553130 is about 7845.5802844659. The cubic root of 61553130 is about 394.8359731287.

Adding to 61553130 its reverse (3135516), we get a palindrome (64688646).

The spelling of 61553130 in words is "sixty-one million, five hundred fifty-three thousand, one hundred thirty".