1352659021 has 4 divisors (see below), whose sum is σ = 1545896032. Its totient is φ = 1159422012.

The previous prime is 1352659019. The next prime is 1352659031. The reversal of 1352659021 is 1209562531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1352659021 - 2¹ = 1352659019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1352659031) 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, 96618495 + ... + 96618508.

It is an arithmetic number, because the mean of its divisors is an integer number (386474008).

Almost surely, 2^1352659021 is an apocalyptic number.

It is an amenable number.

1352659021 is a deficient number, since it is larger than the sum of its proper divisors (193237011).

1352659021 is an equidigital number, since it uses as much as digits as its factorization.

1352659021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193237010.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 1352659021 is about 36778.5130341073. The cubic root of 1352659021 is about 1105.9345971961.

The spelling of 1352659021 in words is "one billion, three hundred fifty-two million, six hundred fifty-nine thousand, twenty-one".