52640401 has 8 divisors (see below), whose sum is σ = 57478464. Its totient is φ = 47811120.

The previous prime is 52640389. The next prime is 52640417. The reversal of 52640401 is 10404625.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52640401 - 2¹¹ = 52638353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52640461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21811 + ... + 24103.

It is an arithmetic number, because the mean of its divisors is an integer number (7184808).

Almost surely, 2^52640401 is an apocalyptic number.

It is an amenable number.

52640401 is a deficient number, since it is larger than the sum of its proper divisors (4838063).

52640401 is a wasteful number, since it uses less digits than its factorization.

52640401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 52640401 is about 7255.3704936412. The cubic root of 52640401 is about 374.7771143664. Note that the first 3 decimals are identical.

The spelling of 52640401 in words is "fifty-two million, six hundred forty thousand, four hundred one".