1357353021 has 8 divisors (see below), whose sum is σ = 1834596160. Its totient is φ = 892505952.

The previous prime is 1357353017. The next prime is 1357353059. The reversal of 1357353021 is 1203537531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1357353021 - 2² = 1357353017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1357353021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357353001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3098761 + ... + 3099198.

It is an arithmetic number, because the mean of its divisors is an integer number (229324520).

Almost surely, 2^1357353021 is an apocalyptic number.

It is an amenable number.

1357353021 is a deficient number, since it is larger than the sum of its proper divisors (477243139).

1357353021 is an equidigital number, since it uses as much as digits as its factorization.

1357353021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6198035.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 1357353021 is about 36842.2722019150. The cubic root of 1357353021 is about 1107.2123924043.

The spelling of 1357353021 in words is "one billion, three hundred fifty-seven million, three hundred fifty-three thousand, twenty-one".