61913052 has 48 divisors (see below), whose sum is σ = 162734880. Its totient is φ = 20352384.

The previous prime is 61913017. The next prime is 61913069. The reversal of 61913052 is 25031916.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 3958 + ... + 11810.

It is an arithmetic number, because the mean of its divisors is an integer number (3390310).

Almost surely, 2^61913052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61913052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81367440).

61913052 is an abundant number, since it is smaller than the sum of its proper divisors (100821828).

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

61913052 is a wasteful number, since it uses less digits than its factorization.

61913052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939 (or 7931 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 61913052 is about 7868.4847334160. The cubic root of 61913052 is about 395.6040578749.

Adding to 61913052 its reverse (25031916), we get a palindrome (86944968).

The spelling of 61913052 in words is "sixty-one million, nine hundred thirteen thousand, fifty-two".