152540399 has 8 divisors (see below), whose sum is σ = 167339520. Its totient is φ = 137896600.

The previous prime is 152540387. The next prime is 152540467. The reversal of 152540399 is 993045251.

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

It is a cyclic number.

It is not a de Polignac number, because 152540399 - 2¹² = 152536303 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 (152540309) 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, 36767 + ... + 40704.

It is an arithmetic number, because the mean of its divisors is an integer number (20917440).

Almost surely, 2^152540399 is an apocalyptic number.

152540399 is a deficient number, since it is larger than the sum of its proper divisors (14799121).

152540399 is a wasteful number, since it uses less digits than its factorization.

152540399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77661.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 152540399 is about 12350.7246346115. The cubic root of 152540399 is about 534.3120385403.

The spelling of 152540399 in words is "one hundred fifty-two million, five hundred forty thousand, three hundred ninety-nine".