61243172 has 24 divisors (see below), whose sum is σ = 108628800. Its totient is φ = 30209760.

The previous prime is 61243139. The next prime is 61243183. The reversal of 61243172 is 27134216.

It is a super-2 number, since 2×61243172² = 7501452233243168, which contains 22 as substring.

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, 125513 + ... + 125999.

It is an arithmetic number, because the mean of its divisors is an integer number (4526200).

Almost surely, 2^61243172 is an apocalyptic number.

It is an amenable number.

61243172 is a deficient number, since it is larger than the sum of its proper divisors (47385628).

61243172 is a wasteful number, since it uses less digits than its factorization.

61243172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 849 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 61243172 is about 7825.8016841727. The cubic root of 61243172 is about 394.1721099528.

Adding to 61243172 its reverse (27134216), we get a palindrome (88377388).

The spelling of 61243172 in words is "sixty-one million, two hundred forty-three thousand, one hundred seventy-two".