52102405 has 4 divisors (see below), whose sum is σ = 62522892. Its totient is φ = 41681920.

The previous prime is 52102387. The next prime is 52102423. The reversal of 52102405 is 50420125.

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

It is an interprime number because it is at equal distance from previous prime (52102387) and next prime (52102423).

It can be written as a sum of positive squares in 2 ways, for example, as 22268961 + 29833444 = 4719^2 + 5462^2 .

It is not a de Polignac number, because 52102405 - 2⁷ = 52102277 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 3 ways as a sum of consecutive naturals, for example, 5210236 + ... + 5210245.

It is an arithmetic number, because the mean of its divisors is an integer number (15630723).

Almost surely, 2^52102405 is an apocalyptic number.

It is an amenable number.

52102405 is a deficient number, since it is larger than the sum of its proper divisors (10420487).

52102405 is a wasteful number, since it uses less digits than its factorization.

52102405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10420486.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 52102405 is about 7218.1995677593. The cubic root of 52102405 is about 373.4959728411.

The spelling of 52102405 in words is "fifty-two million, one hundred two thousand, four hundred five".