53398581 has 8 divisors (see below), whose sum is σ = 75386304. Its totient is φ = 33504960.

The previous prime is 53398577. The next prime is 53398589. The reversal of 53398581 is 18589335.

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

It is not a de Polignac number, because 53398581 - 2² = 53398577 is a prime.

It is a super-2 number, since 2×53398581² = 5702816905627122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53398589) 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, 523465 + ... + 523566.

It is an arithmetic number, because the mean of its divisors is an integer number (9423288).

Almost surely, 2^53398581 is an apocalyptic number.

53398581 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

53398581 is a deficient number, since it is larger than the sum of its proper divisors (21987723).

53398581 is a wasteful number, since it uses less digits than its factorization.

53398581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047051.

The product of its digits is 129600, while the sum is 42.

The square root of 53398581 is about 7307.4332703077. The cubic root of 53398581 is about 376.5678500104.

The spelling of 53398581 in words is "fifty-three million, three hundred ninety-eight thousand, five hundred eighty-one".