61253331 has 8 divisors (see below), whose sum is σ = 81753024. Its totient is φ = 40794600.

The previous prime is 61253323. The next prime is 61253341. The reversal of 61253331 is 13335216.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61253331 - 2³ = 61253323 is a prime.

It is a super-2 number, since 2×61253331² = 7503941117191122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61253341) 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, 6561 + ... + 12866.

It is an arithmetic number, because the mean of its divisors is an integer number (10219128).

Almost surely, 2^61253331 is an apocalyptic number.

61253331 is a deficient number, since it is larger than the sum of its proper divisors (20499693).

61253331 is a wasteful number, since it uses less digits than its factorization.

61253331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20481.

The product of its digits is 1620, while the sum is 24.

The square root of 61253331 is about 7826.4507281398. The cubic root of 61253331 is about 394.1939038004.

Adding to 61253331 its reverse (13335216), we get a palindrome (74588547).

The spelling of 61253331 in words is "sixty-one million, two hundred fifty-three thousand, three hundred thirty-one".