53750491 has 4 divisors (see below), whose sum is σ = 53831032. Its totient is φ = 53669952.

The previous prime is 53750429. The next prime is 53750507. The reversal of 53750491 is 19405735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19405735 = 5 ⋅3881147.

It is a cyclic number.

It is not a de Polignac number, because 53750491 - 2⁹ = 53749979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53757491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39261 + ... + 40606.

It is an arithmetic number, because the mean of its divisors is an integer number (13457758).

Almost surely, 2^53750491 is an apocalyptic number.

53750491 is a deficient number, since it is larger than the sum of its proper divisors (80541).

53750491 is an equidigital number, since it uses as much as digits as its factorization.

53750491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80540.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 53750491 is about 7331.4726351532. The cubic root of 53750491 is about 377.3932648552.

The spelling of 53750491 in words is "fifty-three million, seven hundred fifty thousand, four hundred ninety-one".