52471557 has 20 divisors (see below), whose sum is σ = 78582240. Its totient is φ = 34892424.

The previous prime is 52471553. The next prime is 52471577. The reversal of 52471557 is 75517425.

It is not a de Polignac number, because 52471557 - 2² = 52471553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52471553) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52888 + ... + 53870.

It is an arithmetic number, because the mean of its divisors is an integer number (3929112).

Almost surely, 2^52471557 is an apocalyptic number.

It is an amenable number.

52471557 is a deficient number, since it is larger than the sum of its proper divisors (26110683).

52471557 is an equidigital number, since it uses as much as digits as its factorization.

52471557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 1645 counting only the distinct ones).

The product of its digits is 49000, while the sum is 36.

The square root of 52471557 is about 7243.7253537113. The cubic root of 52471557 is about 374.3759861940.

The spelling of 52471557 in words is "fifty-two million, four hundred seventy-one thousand, five hundred fifty-seven".