1357501381 has 4 divisors (see below), whose sum is σ = 1379755564. Its totient is φ = 1335247200.

The previous prime is 1357501351. The next prime is 1357501447. The reversal of 1357501381 is 1831057531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 345625281 + 1011876100 = 18591^2 + 31810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1357501381 - 2²³ = 1349112773 is a prime.

It is a super-2 number, since 2×1357501381² = 3685619998833814322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357501351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11127000 + ... + 11127121.

It is an arithmetic number, because the mean of its divisors is an integer number (344938891).

Almost surely, 2^1357501381 is an apocalyptic number.

It is an amenable number.

1357501381 is a deficient number, since it is larger than the sum of its proper divisors (22254183).

1357501381 is an equidigital number, since it uses as much as digits as its factorization.

1357501381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22254182.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1357501381 is about 36844.2855949196. The cubic root of 1357501381 is about 1107.2527307303.

The spelling of 1357501381 in words is "one billion, three hundred fifty-seven million, five hundred one thousand, three hundred eighty-one".