152155421 has 8 divisors (see below), whose sum is σ = 169120224. Its totient is φ = 135712720.

The previous prime is 152155397. The next prime is 152155429. The reversal of 152155421 is 124551251.

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

It is not a de Polignac number, because 152155421 - 2⁶ = 152155357 is a prime.

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 (152155429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129911 + ... + 131076.

It is an arithmetic number, because the mean of its divisors is an integer number (21140028).

Almost surely, 2^152155421 is an apocalyptic number.

152155421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

152155421 is a deficient number, since it is larger than the sum of its proper divisors (16964803).

152155421 is a wasteful number, since it uses less digits than its factorization.

152155421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261051.

The product of its digits is 2000, while the sum is 26.

The square root of 152155421 is about 12335.1295493805. The cubic root of 152155421 is about 533.8621649986.

The spelling of 152155421 in words is "one hundred fifty-two million, one hundred fifty-five thousand, four hundred twenty-one".