53489397 has 16 divisors (see below), whose sum is σ = 77027328. Its totient is φ = 32821440.

The previous prime is 53489339. The next prime is 53489411. The reversal of 53489397 is 79398435.

It is not a de Polignac number, because 53489397 - 2⁸ = 53489141 is a prime.

It is a super-2 number, since 2×53489397² = 5722231182847218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53489197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13147 + ... + 16727.

It is an arithmetic number, because the mean of its divisors is an integer number (4814208).

Almost surely, 2^53489397 is an apocalyptic number.

It is an amenable number.

53489397 is a deficient number, since it is larger than the sum of its proper divisors (23537931).

53489397 is a wasteful number, since it uses less digits than its factorization.

53489397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980.

The product of its digits is 816480, while the sum is 48.

The square root of 53489397 is about 7313.6445770901. The cubic root of 53489397 is about 376.7812078452.

The spelling of 53489397 in words is "fifty-three million, four hundred eighty-nine thousand, three hundred ninety-seven".