1253780051 has 2 divisors, whose sum is σ = 1253780052. Its totient is φ = 1253780050.

The previous prime is 1253779993. The next prime is 1253780083. The reversal of 1253780051 is 1500873521.

It is an a-pointer prime, because the next prime (1253780083) can be obtained adding 1253780051 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1253780051 - 2⁶ = 1253779987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1253780251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626890025 + 626890026.

It is an arithmetic number, because the mean of its divisors is an integer number (626890026).

Almost surely, 2^1253780051 is an apocalyptic number.

1253780051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253780051 is an equidigital number, since it uses as much as digits as its factorization.

1253780051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1253780051 is about 35408.7566994381. The cubic root of 1253780051 is about 1078.3021020337.

The spelling of 1253780051 in words is "one billion, two hundred fifty-three million, seven hundred eighty thousand, fifty-one".