1357540 has 24 divisors (see below), whose sum is σ = 2882880. Its totient is φ = 536928.

The previous prime is 1357537. The next prime is 1357547. The reversal of 1357540 is 457531.

It is not an unprimeable number, because it can be changed into a prime (1357547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1731 + ... + 2389.

It is an arithmetic number, because the mean of its divisors is an integer number (120120).

2^1357540 is an apocalyptic number.

1357540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1357540 is an abundant number, since it is smaller than the sum of its proper divisors (1525340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1357540 is a wasteful number, since it uses less digits than its factorization.

1357540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 1357540 is about 1165.1351852897. The cubic root of 1357540 is about 110.7263230557.

Subtracting from 1357540 its reverse (457531), we obtain a palindrome (900009).

The spelling of 1357540 in words is "one million, three hundred fifty-seven thousand, five hundred forty".