155380015 has 8 divisors (see below), whose sum is σ = 213092640. Its totient is φ = 106546272.

The previous prime is 155380009. The next prime is 155380033. The reversal of 155380015 is 510083551.

155380015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 155380015 - 2¹¹ = 155377967 is a prime.

It is a super-2 number, since 2×155380015² = 48285898122800450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2219680 + ... + 2219749.

It is an arithmetic number, because the mean of its divisors is an integer number (26636580).

Almost surely, 2^155380015 is an apocalyptic number.

155380015 is a deficient number, since it is larger than the sum of its proper divisors (57712625).

155380015 is an equidigital number, since it uses as much as digits as its factorization.

155380015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439441.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 155380015 is about 12465.1520247448. The cubic root of 155380015 is about 537.6071709862.

The spelling of 155380015 in words is "one hundred fifty-five million, three hundred eighty thousand, fifteen".