53421465 has 32 divisors (see below), whose sum is σ = 87699456. Its totient is φ = 27760320.

The previous prime is 53421461. The next prime is 53421493. The reversal of 53421465 is 56412435.

It is not a de Polignac number, because 53421465 - 2² = 53421461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53421461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109452 + ... + 109938.

It is an arithmetic number, because the mean of its divisors is an integer number (2740608).

Almost surely, 2^53421465 is an apocalyptic number.

It is an amenable number.

53421465 is a deficient number, since it is larger than the sum of its proper divisors (34277991).

53421465 is a wasteful number, since it uses less digits than its factorization.

53421465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669.

The product of its digits is 14400, while the sum is 30.

The square root of 53421465 is about 7308.9989054589. The cubic root of 53421465 is about 376.6216351348.

The spelling of 53421465 in words is "fifty-three million, four hundred twenty-one thousand, four hundred sixty-five".