61021372 has 24 divisors (see below), whose sum is σ = 108762192. Its totient is φ = 29952000.

The previous prime is 61021297. The next prime is 61021397. The reversal of 61021372 is 27312016.

It is a congruent number.

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, 52348 + ... + 53500.

It is an arithmetic number, because the mean of its divisors is an integer number (4531758).

Almost surely, 2^61021372 is an apocalyptic number.

It is an amenable number.

61021372 is a deficient number, since it is larger than the sum of its proper divisors (47740820).

61021372 is a wasteful number, since it uses less digits than its factorization.

61021372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 61021372 is about 7811.6177581856. The cubic root of 61021372 is about 393.6956860667.

Adding to 61021372 its reverse (27312016), we get a palindrome (88333388).

The spelling of 61021372 in words is "sixty-one million, twenty-one thousand, three hundred seventy-two".