52071407 has 4 divisors (see below), whose sum is σ = 52093896. Its totient is φ = 52048920.

The previous prime is 52071403. The next prime is 52071421. The reversal of 52071407 is 70417025.

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

It is a cyclic number.

It is not a de Polignac number, because 52071407 - 2² = 52071403 is a prime.

It is a super-2 number, since 2×52071407² = 5422862853919298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52071401) 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, 7313 + ... + 12554.

It is an arithmetic number, because the mean of its divisors is an integer number (13023474).

Almost surely, 2^52071407 is an apocalyptic number.

52071407 is a deficient number, since it is larger than the sum of its proper divisors (22489).

52071407 is a wasteful number, since it uses less digits than its factorization.

52071407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22488.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 52071407 is about 7216.0520369521. The cubic root of 52071407 is about 373.4218884494.

The spelling of 52071407 in words is "fifty-two million, seventy-one thousand, four hundred seven".