61151475 has 48 divisors (see below), whose sum is σ = 126063360. Its totient is φ = 25411200.

The previous prime is 61151429. The next prime is 61151477. The reversal of 61151475 is 57415116.

It is not a de Polignac number, because 61151475 - 2¹⁰ = 61150451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61151477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 481 + ... + 11069.

It is an arithmetic number, because the mean of its divisors is an integer number (2626320).

Almost surely, 2^61151475 is an apocalyptic number.

61151475 is an abundant number, since it is smaller than the sum of its proper divisors (64911885).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61151475 is a wasteful number, since it uses less digits than its factorization.

61151475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10620 (or 10615 counting only the distinct ones).

The product of its digits is 4200, while the sum is 30.

The square root of 61151475 is about 7819.9408565538. The cubic root of 61151475 is about 393.9752855395.

The spelling of 61151475 in words is "sixty-one million, one hundred fifty-one thousand, four hundred seventy-five".