61371261 has 12 divisors (see below), whose sum is σ = 101311392. Its totient is φ = 35069256.

The previous prime is 61371239. The next prime is 61371283. The reversal of 61371261 is 16217316.

It is an interprime number because it is at equal distance from previous prime (61371239) and next prime (61371283).

It is a de Polignac number, because none of the positive numbers 2^k-61371261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61371361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 487011 + ... + 487136.

It is an arithmetic number, because the mean of its divisors is an integer number (8442616).

Almost surely, 2^61371261 is an apocalyptic number.

It is an amenable number.

61371261 is a deficient number, since it is larger than the sum of its proper divisors (39940131).

61371261 is a wasteful number, since it uses less digits than its factorization.

61371261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974160 (or 974157 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 61371261 is about 7833.9811717925. The cubic root of 61371261 is about 394.4467199028.

Adding to 61371261 its reverse (16217316), we get a palindrome (77588577).

The spelling of 61371261 in words is "sixty-one million, three hundred seventy-one thousand, two hundred sixty-one".