52129705 has 4 divisors (see below), whose sum is σ = 62555652. Its totient is φ = 41703760.

The previous prime is 52129669. The next prime is 52129723. The reversal of 52129705 is 50792125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20466576 + 31663129 = 4524^2 + 5627^2 .

It is not a de Polignac number, because 52129705 - 2¹¹ = 52127657 is a prime.

It is a super-2 number, since 2×52129705² = 5435012286774050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5212966 + ... + 5212975.

It is an arithmetic number, because the mean of its divisors is an integer number (15638913).

Almost surely, 2^52129705 is an apocalyptic number.

It is an amenable number.

52129705 is a deficient number, since it is larger than the sum of its proper divisors (10425947).

52129705 is a wasteful number, since it uses less digits than its factorization.

52129705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10425946.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 52129705 is about 7220.0903733956. The cubic root of 52129705 is about 373.5611947805.

The spelling of 52129705 in words is "fifty-two million, one hundred twenty-nine thousand, seven hundred five".