53001731 has 2 divisors, whose sum is σ = 53001732. Its totient is φ = 53001730.

The previous prime is 53001727. The next prime is 53001743. The reversal of 53001731 is 13710035.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53001731 - 2² = 53001727 is a prime.

It is a super-2 number, since 2×53001731² = 5618366977992722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53001791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26500865 + 26500866.

It is an arithmetic number, because the mean of its divisors is an integer number (26500866).

Almost surely, 2^53001731 is an apocalyptic number.

53001731 is a deficient number, since it is larger than the sum of its proper divisors (1).

53001731 is an equidigital number, since it uses as much as digits as its factorization.

53001731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 53001731 is about 7280.2287738779. The cubic root of 53001731 is about 375.6326647679.

Adding to 53001731 its reverse (13710035), we get a palindrome (66711766).

The spelling of 53001731 in words is "fifty-three million, one thousand, seven hundred thirty-one".