52351581 has 8 divisors (see below), whose sum is σ = 69889824. Its totient is φ = 34857200.

The previous prime is 52351577. The next prime is 52351601. The reversal of 52351581 is 18515325.

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 52351581 - 2² = 52351577 is a prime.

It is a super-2 number, since 2×52351581² = 5481376066399122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52351531) 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, 8070 + ... + 13031.

It is an arithmetic number, because the mean of its divisors is an integer number (8736228).

Almost surely, 2^52351581 is an apocalyptic number.

It is an amenable number.

52351581 is a deficient number, since it is larger than the sum of its proper divisors (17538243).

52351581 is a wasteful number, since it uses less digits than its factorization.

52351581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21931.

The product of its digits is 6000, while the sum is 30.

The square root of 52351581 is about 7235.4392402950. The cubic root of 52351581 is about 374.0904320579.

The spelling of 52351581 in words is "fifty-two million, three hundred fifty-one thousand, five hundred eighty-one".