61523772 has 24 divisors (see below), whose sum is σ = 145579392. Its totient is φ = 20218800.

The previous prime is 61523771. The next prime is 61523801. The reversal of 61523772 is 27732516.

It is a super-2 number, since 2×61523772² = 7570349042215968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61523771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35254 + ... + 36957.

It is an arithmetic number, because the mean of its divisors is an integer number (6065808).

Almost surely, 2^61523772 is an apocalyptic number.

It is an amenable number.

61523772 is an abundant number, since it is smaller than the sum of its proper divisors (84055620).

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

61523772 is a wasteful number, since it uses less digits than its factorization.

61523772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72289 (or 72287 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 61523772 is about 7843.7090716064. The cubic root of 61523772 is about 394.7731903053.

The spelling of 61523772 in words is "sixty-one million, five hundred twenty-three thousand, seven hundred seventy-two".