158211457 has 4 divisors (see below), whose sum is σ = 165090240. Its totient is φ = 151332676.

The previous prime is 158211437. The next prime is 158211517. The reversal of 158211457 is 754112851.

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 158211457 - 2¹⁵ = 158178689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158211407) 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 3 ways as a sum of consecutive naturals, for example, 3439357 + ... + 3439402.

It is an arithmetic number, because the mean of its divisors is an integer number (41272560).

Almost surely, 2^158211457 is an apocalyptic number.

It is an amenable number.

158211457 is a deficient number, since it is larger than the sum of its proper divisors (6878783).

158211457 is an equidigital number, since it uses as much as digits as its factorization.

158211457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878782.

The product of its digits is 11200, while the sum is 34.

The square root of 158211457 is about 12578.2135854023. The cubic root of 158211457 is about 540.8530834727.

The spelling of 158211457 in words is "one hundred fifty-eight million, two hundred eleven thousand, four hundred fifty-seven".