158470261 has 4 divisors (see below), whose sum is σ = 158763724. Its totient is φ = 158176800.

The previous prime is 158470237. The next prime is 158470271. The reversal of 158470261 is 162074851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110376036 + 48094225 = 10506^2 + 6935^2 .

It is a cyclic number.

It is not a de Polignac number, because 158470261 - 2¹³ = 158462069 is a prime.

It is a super-2 number, since 2×158470261² = 50225647242816242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158470271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145920 + ... + 147001.

It is an arithmetic number, because the mean of its divisors is an integer number (39690931).

Almost surely, 2^158470261 is an apocalyptic number.

It is an amenable number.

158470261 is a deficient number, since it is larger than the sum of its proper divisors (293463).

158470261 is an equidigital number, since it uses as much as digits as its factorization.

158470261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293462.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 158470261 is about 12588.4971700358. The cubic root of 158470261 is about 541.1478339060.

The spelling of 158470261 in words is "one hundred fifty-eight million, four hundred seventy thousand, two hundred sixty-one".