158102261 has 8 divisors (see below), whose sum is σ = 168528600. Its totient is φ = 147801088.

The previous prime is 158102257. The next prime is 158102267. The reversal of 158102261 is 162201851.

It can be written as a sum of positive squares in 4 ways, for example, as 122500 + 157979761 = 350^2 + 12569^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 158102261 - 2² = 158102257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158102261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158102267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28676 + ... + 33741.

It is an arithmetic number, because the mean of its divisors is an integer number (21066075).

Almost surely, 2^158102261 is an apocalyptic number.

It is an amenable number.

158102261 is a deficient number, since it is larger than the sum of its proper divisors (10426339).

158102261 is a wasteful number, since it uses less digits than its factorization.

158102261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62583.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 158102261 is about 12573.8721561816. The cubic root of 158102261 is about 540.7286243322.

The spelling of 158102261 in words is "one hundred fifty-eight million, one hundred two thousand, two hundred sixty-one".