51250057 has 2 divisors, whose sum is σ = 51250058. Its totient is φ = 51250056.

The previous prime is 51250013. The next prime is 51250061. The reversal of 51250057 is 75005215.

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., 31036041 + 20214016 = 5571^2 + 4496^2 .

It is a cyclic number.

It is not a de Polignac number, because 51250057 - 2⁷ = 51249929 is a prime.

It is not a weakly prime, because it can be changed into another prime (51250007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25625028 + 25625029.

It is an arithmetic number, because the mean of its divisors is an integer number (25625029).

Almost surely, 2^51250057 is an apocalyptic number.

It is an amenable number.

51250057 is a deficient number, since it is larger than the sum of its proper divisors (1).

51250057 is an equidigital number, since it uses as much as digits as its factorization.

51250057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 51250057 is about 7158.9145126898. The cubic root of 51250057 is about 371.4480797798.

The spelling of 51250057 in words is "fifty-one million, two hundred fifty thousand, fifty-seven".