61901272 has 8 divisors (see below), whose sum is σ = 116064900. Its totient is φ = 30950632.

The previous prime is 61901269. The next prime is 61901309. The reversal of 61901272 is 27210916.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 61901272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3868822 + ... + 3868837.

Almost surely, 2^61901272 is an apocalyptic number.

It is an amenable number.

61901272 is a deficient number, since it is larger than the sum of its proper divisors (54163628).

61901272 is a wasteful number, since it uses less digits than its factorization.

61901272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7737665 (or 7737661 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 61901272 is about 7867.7361419915. The cubic root of 61901272 is about 395.5789661737.

The spelling of 61901272 in words is "sixty-one million, nine hundred one thousand, two hundred seventy-two".