53250031 has 2 divisors, whose sum is σ = 53250032. Its totient is φ = 53250030.

The previous prime is 53250023. The next prime is 53250047. The reversal of 53250031 is 13005235.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53250031 - 2³ = 53250023 is a prime.

It is a super-2 number, since 2×53250031² = 5671131603001922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53249990 and 53250008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53250091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26625015 + 26625016.

It is an arithmetic number, because the mean of its divisors is an integer number (26625016).

Almost surely, 2^53250031 is an apocalyptic number.

53250031 is a deficient number, since it is larger than the sum of its proper divisors (1).

53250031 is an equidigital number, since it uses as much as digits as its factorization.

53250031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 53250031 is about 7297.2618837479. The cubic root of 53250031 is about 376.2183331884.

Adding to 53250031 its reverse (13005235), we get a palindrome (66255266).

The spelling of 53250031 in words is "fifty-three million, two hundred fifty thousand, thirty-one".