155216301 has 16 divisors (see below), whose sum is σ = 218265600. Its totient is φ = 97843248.

The previous prime is 155216297. The next prime is 155216309. The reversal of 155216301 is 103612551.

It is not a de Polignac number, because 155216301 - 2² = 155216297 is a prime.

It is a super-2 number, since 2×155216301² = 48184200192245202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155216309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31140 + ... + 35778.

It is an arithmetic number, because the mean of its divisors is an integer number (13641600).

Almost surely, 2^155216301 is an apocalyptic number.

155216301 is the 7880-th centered pentagonal number.

It is an amenable number.

155216301 is a deficient number, since it is larger than the sum of its proper divisors (63049299).

155216301 is a wasteful number, since it uses less digits than its factorization.

155216301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5248.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 155216301 is about 12458.5834266982. The cubic root of 155216301 is about 537.4182905179.

Adding to 155216301 its reverse (103612551), we get a palindrome (258828852).

The spelling of 155216301 in words is "one hundred fifty-five million, two hundred sixteen thousand, three hundred one".