61472231 has 4 divisors (see below), whose sum is σ = 61525464. Its totient is φ = 61419000.

The previous prime is 61472219. The next prime is 61472233. The reversal of 61472231 is 13227416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61472231 is a prime.

It is a super-2 number, since 2×61472231² = 7557670368234722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61472231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61472233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24845 + ... + 27206.

It is an arithmetic number, because the mean of its divisors is an integer number (15381366).

Almost surely, 2^61472231 is an apocalyptic number.

61472231 is a deficient number, since it is larger than the sum of its proper divisors (53233).

61472231 is a wasteful number, since it uses less digits than its factorization.

61472231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53232.

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

The square root of 61472231 is about 7840.4228840031. The cubic root of 61472231 is about 394.6629202485.

Adding to 61472231 its reverse (13227416), we get a palindrome (74699647).

The spelling of 61472231 in words is "sixty-one million, four hundred seventy-two thousand, two hundred thirty-one".