1357087 has 4 divisors (see below), whose sum is σ = 1400896. Its totient is φ = 1313280.

The previous prime is 1357079. The next prime is 1357091. The reversal of 1357087 is 7807531.

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

It is a cyclic number.

It is not a de Polignac number, because 1357087 - 2³ = 1357079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 43777 = 1357087 / (1 + 3 + 5 + 7 + 0 + 8 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357787) 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, 21858 + ... + 21919.

It is an arithmetic number, because the mean of its divisors is an integer number (350224).

2^1357087 is an apocalyptic number.

1357087 is a deficient number, since it is larger than the sum of its proper divisors (43809).

1357087 is an equidigital number, since it uses as much as digits as its factorization.

1357087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43808.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 1357087 is about 1164.9407710266. The cubic root of 1357087 is about 110.7140055292.

The spelling of 1357087 in words is "one million, three hundred fifty-seven thousand, eighty-seven".