52802157 has 4 divisors (see below), whose sum is σ = 70402880. Its totient is φ = 35201436.

The previous prime is 52802143. The next prime is 52802177. The reversal of 52802157 is 75120825.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-52802157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52802177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8800357 + ... + 8800362.

It is an arithmetic number, because the mean of its divisors is an integer number (17600720).

Almost surely, 2^52802157 is an apocalyptic number.

It is an amenable number.

52802157 is a deficient number, since it is larger than the sum of its proper divisors (17600723).

52802157 is a wasteful number, since it uses less digits than its factorization.

52802157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17600722.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 52802157 is about 7266.5092719957. The cubic root of 52802157 is about 375.1605996553.

The spelling of 52802157 in words is "fifty-two million, eight hundred two thousand, one hundred fifty-seven".