152897621 has 4 divisors (see below), whose sum is σ = 153537600. Its totient is φ = 152257644.

The previous prime is 152897603. The next prime is 152897623. The reversal of 152897621 is 126798251.

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, and also an emirpimes, since its reverse is a distinct semiprime: 126798251 = 727 ⋅174413.

It is a cyclic number.

It is not a de Polignac number, because 152897621 - 2¹⁴ = 152881237 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 (152897623) 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 3 ways as a sum of consecutive naturals, for example, 319631 + ... + 320108.

It is an arithmetic number, because the mean of its divisors is an integer number (38384400).

Almost surely, 2^152897621 is an apocalyptic number.

It is an amenable number.

152897621 is a deficient number, since it is larger than the sum of its proper divisors (639979).

152897621 is an equidigital number, since it uses as much as digits as its factorization.

152897621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639978.

The product of its digits is 60480, while the sum is 41.

The square root of 152897621 is about 12365.1777585282. The cubic root of 152897621 is about 534.7288007380.

The spelling of 152897621 in words is "one hundred fifty-two million, eight hundred ninety-seven thousand, six hundred twenty-one".