53291493 has 16 divisors (see below), whose sum is σ = 79532160. Its totient is φ = 35265888.

The previous prime is 53291477. The next prime is 53291519. The reversal of 53291493 is 39419235.

It is a happy number.

It is not a de Polignac number, because 53291493 - 2⁴ = 53291477 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53291453) 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, 3505 + ... + 10902.

It is an arithmetic number, because the mean of its divisors is an integer number (4970760).

Almost surely, 2^53291493 is an apocalyptic number.

It is an amenable number.

53291493 is a deficient number, since it is larger than the sum of its proper divisors (26240667).

53291493 is a wasteful number, since it uses less digits than its factorization.

53291493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14553 (or 14547 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 53291493 is about 7300.1022595577. The cubic root of 53291493 is about 376.3159526479.

The spelling of 53291493 in words is "fifty-three million, two hundred ninety-one thousand, four hundred ninety-three".