1651251241 has 2 divisors, whose sum is σ = 1651251242. Its totient is φ = 1651251240.

The previous prime is 1651251229. The next prime is 1651251253. The reversal of 1651251241 is 1421521561.

It is a balanced prime because it is at equal distance from previous prime (1651251229) and next prime (1651251253).

It can be written as a sum of positive squares in only one way, i.e., 1596801600 + 54449641 = 39960^2 + 7379^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651251241 - 2¹³ = 1651243049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1651251341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825625620 + 825625621.

It is an arithmetic number, because the mean of its divisors is an integer number (825625621).

Almost surely, 2^1651251241 is an apocalyptic number.

It is an amenable number.

1651251241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651251241 is an equidigital number, since it uses as much as digits as its factorization.

1651251241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 28.

The square root of 1651251241 is about 40635.5908164259. The cubic root of 1651251241 is about 1181.9643716899.

The spelling of 1651251241 in words is "one billion, six hundred fifty-one million, two hundred fifty-one thousand, two hundred forty-one".