61528375 has 8 divisors (see below), whose sum is σ = 76787568. Its totient is φ = 49222600.

The previous prime is 61528367. The next prime is 61528391. The reversal of 61528375 is 57382516.

It is not a de Polignac number, because 61528375 - 2³ = 61528367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245989 + ... + 246238.

It is an arithmetic number, because the mean of its divisors is an integer number (9598446).

Almost surely, 2^61528375 is an apocalyptic number.

61528375 is a deficient number, since it is larger than the sum of its proper divisors (15259193).

61528375 is an equidigital number, since it uses as much as digits as its factorization.

61528375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492242 (or 492232 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 61528375 is about 7844.0024859761. The cubic root of 61528375 is about 394.7830352569.

The spelling of 61528375 in words is "sixty-one million, five hundred twenty-eight thousand, three hundred seventy-five".