157249 has 4 divisors (see below), whose sum is σ = 159664. Its totient is φ = 154836.

The previous prime is 157247. The next prime is 157253. The reversal of 157249 is 942751.

It is a happy number.

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: 942751 = 401 ⋅2351.

It is a cyclic number.

It is not a de Polignac number, because 157249 - 2¹ = 157247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (39916).

2¹⁵⁷²⁴⁹ is an apocalyptic number.

It is an amenable number.

157249 is a deficient number, since it is larger than the sum of its proper divisors (2415).

157249 is an equidigital number, since it uses as much as digits as its factorization.

157249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414.

The product of its digits is 2520, while the sum is 28.

The square root of 157249 is about 396.5463402933. The cubic root of 157249 is about 53.9754117596.

It can be divided in two parts, 1572 and 49, that multiplied together give a triangular number (77028 = T₃₉₂).

The spelling of 157249 in words is "one hundred fifty-seven thousand, two hundred forty-nine".