152745621 has 8 divisors (see below), whose sum is σ = 232755264. Its totient is φ = 87283200.

The previous prime is 152745611. The next prime is 152745641. The reversal of 152745621 is 126547251.

152745621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 152745621 - 2⁶ = 152745557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152745611) 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, 3636780 + ... + 3636821.

It is an arithmetic number, because the mean of its divisors is an integer number (29094408).

Almost surely, 2^152745621 is an apocalyptic number.

It is an amenable number.

152745621 is a deficient number, since it is larger than the sum of its proper divisors (80009643).

152745621 is an equidigital number, since it uses as much as digits as its factorization.

152745621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7273611.

The product of its digits is 16800, while the sum is 33.

The square root of 152745621 is about 12359.0299376610. The cubic root of 152745621 is about 534.5515454698.

The spelling of 152745621 in words is "one hundred fifty-two million, seven hundred forty-five thousand, six hundred twenty-one".