151399 has 4 divisors (see below), whose sum is σ = 153000. Its totient is φ = 149800.

The previous prime is 151397. The next prime is 151423. The reversal of 151399 is 993151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993151 = 89 ⋅11159.

It is a cyclic number.

It is not a de Polignac number, because 151399 - 2¹ = 151397 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 (151391) 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, 649 + ... + 850.

It is an arithmetic number, because the mean of its divisors is an integer number (38250).

2¹⁵¹³⁹⁹ is an apocalyptic number.

151399 is a deficient number, since it is larger than the sum of its proper divisors (1601).

151399 is a wasteful number, since it uses less digits than its factorization.

151399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600.

The product of its digits is 1215, while the sum is 28.

The square root of 151399 is about 389.1002441531. The cubic root of 151399 is about 53.2976019347.

The spelling of 151399 in words is "one hundred fifty-one thousand, three hundred ninety-nine".