1357135261 has 2 divisors, whose sum is σ = 1357135262. Its totient is φ = 1357135260.

The previous prime is 1357135253. The next prime is 1357135271. The reversal of 1357135261 is 1625317531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1098922500 + 258212761 = 33150^2 + 16069^2 .

It is a cyclic number.

It is not a de Polignac number, because 1357135261 - 2³ = 1357135253 is a prime.

It is a super-2 number, since 2×1357135261² = 3683632233299076242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1357135271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678567630 + 678567631.

It is an arithmetic number, because the mean of its divisors is an integer number (678567631).

Almost surely, 2^1357135261 is an apocalyptic number.

It is an amenable number.

1357135261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1357135261 is an equidigital number, since it uses as much as digits as its factorization.

1357135261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 34.

The square root of 1357135261 is about 36839.3167824812. The cubic root of 1357135261 is about 1107.1531792491.

The spelling of 1357135261 in words is "one billion, three hundred fifty-seven million, one hundred thirty-five thousand, two hundred sixty-one".