51156241 has 2 divisors, whose sum is σ = 51156242. Its totient is φ = 51156240.

The previous prime is 51156181. The next prime is 51156253. The reversal of 51156241 is 14265115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50339025 + 817216 = 7095^2 + 904^2 .

It is a cyclic number.

It is not a de Polignac number, because 51156241 - 2⁹ = 51155729 is a prime.

It is not a weakly prime, because it can be changed into another prime (51156271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25578120 + 25578121.

It is an arithmetic number, because the mean of its divisors is an integer number (25578121).

Almost surely, 2^51156241 is an apocalyptic number.

It is an amenable number.

51156241 is a deficient number, since it is larger than the sum of its proper divisors (1).

51156241 is an equidigital number, since it uses as much as digits as its factorization.

51156241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 51156241 is about 7152.3591212970. The cubic root of 51156241 is about 371.2212894091.

The spelling of 51156241 in words is "fifty-one million, one hundred fifty-six thousand, two hundred forty-one".