152489381 has 4 divisors (see below), whose sum is σ = 166352064. Its totient is φ = 138626700.

The previous prime is 152489377. The next prime is 152489399. The reversal of 152489381 is 183984251.

152489381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 152489381 - 2² = 152489377 is a prime.

It is a super-2 number, since 2×152489381² = 46506022635526322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152489581) 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, 6931325 + ... + 6931346.

It is an arithmetic number, because the mean of its divisors is an integer number (41588016).

Almost surely, 2^152489381 is an apocalyptic number.

152489381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

152489381 is a deficient number, since it is larger than the sum of its proper divisors (13862683).

152489381 is a wasteful number, since it uses less digits than its factorization.

152489381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13862682.

The product of its digits is 69120, while the sum is 41.

The square root of 152489381 is about 12348.6590770010. The cubic root of 152489381 is about 534.2524640028.

The spelling of 152489381 in words is "one hundred fifty-two million, four hundred eighty-nine thousand, three hundred eighty-one".