53444137 has 2 divisors, whose sum is σ = 53444138. Its totient is φ = 53444136.

The previous prime is 53444119. The next prime is 53444143. The reversal of 53444137 is 73144435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53231616 + 212521 = 7296^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 53444137 - 2⁷ = 53444009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53444099 and 53444108.

It is not a weakly prime, because it can be changed into another prime (53444177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26722068 + 26722069.

It is an arithmetic number, because the mean of its divisors is an integer number (26722069).

Almost surely, 2^53444137 is an apocalyptic number.

It is an amenable number.

53444137 is a deficient number, since it is larger than the sum of its proper divisors (1).

53444137 is an equidigital number, since it uses as much as digits as its factorization.

53444137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 31.

The square root of 53444137 is about 7310.5497057335. The cubic root of 53444137 is about 376.6749068428.

The spelling of 53444137 in words is "fifty-three million, four hundred forty-four thousand, one hundred thirty-seven".