61251337 has 4 divisors (see below), whose sum is σ = 70001536. Its totient is φ = 52501140.

The previous prime is 61251331. The next prime is 61251341. The reversal of 61251337 is 73315216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61251337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61251331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4375089 + ... + 4375102.

It is an arithmetic number, because the mean of its divisors is an integer number (17500384).

Almost surely, 2^61251337 is an apocalyptic number.

It is an amenable number.

61251337 is a deficient number, since it is larger than the sum of its proper divisors (8750199).

61251337 is an equidigital number, since it uses as much as digits as its factorization.

61251337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8750198.

The product of its digits is 3780, while the sum is 28.

The square root of 61251337 is about 7826.3233385799. The cubic root of 61251337 is about 394.1896263123.

The spelling of 61251337 in words is "sixty-one million, two hundred fifty-one thousand, three hundred thirty-seven".