52148691 has 40 divisors (see below), whose sum is σ = 90895200. Its totient is φ = 29783376.

The previous prime is 52148687. The next prime is 52148731. The reversal of 52148691 is 19684125.

52148691 is a `hidden beast` number, since 521 + 48 + 6 + 91 = 666.

It is not a de Polignac number, because 52148691 - 2² = 52148687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52148671) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26845 + ... + 28721.

It is an arithmetic number, because the mean of its divisors is an integer number (2272380).

Almost surely, 2^52148691 is an apocalyptic number.

52148691 is a deficient number, since it is larger than the sum of its proper divisors (38746509).

52148691 is an equidigital number, since it uses as much as digits as its factorization.

52148691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1887 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 52148691 is about 7221.4050571894. The cubic root of 52148691 is about 373.6065404683.

The spelling of 52148691 in words is "fifty-two million, one hundred forty-eight thousand, six hundred ninety-one".