61917252 has 24 divisors (see below), whose sum is σ = 145084800. Its totient is φ = 20551776.

The previous prime is 61917241. The next prime is 61917263. The reversal of 61917252 is 25271916.

It is an interprime number because it is at equal distance from previous prime (61917241) and next prime (61917263).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7927 + ... + 13662.

It is an arithmetic number, because the mean of its divisors is an integer number (6045200).

Almost surely, 2^61917252 is an apocalyptic number.

It is an amenable number.

61917252 is an abundant number, since it is smaller than the sum of its proper divisors (83167548).

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

61917252 is a wasteful number, since it uses less digits than its factorization.

61917252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21835 (or 21833 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 61917252 is about 7868.7516163620. The cubic root of 61917252 is about 395.6130032126.

It can be divided in two parts, 619 and 17252, that added together give a palindrome (17871).

The spelling of 61917252 in words is "sixty-one million, nine hundred seventeen thousand, two hundred fifty-two".