155400145 has 16 divisors (see below), whose sum is σ = 207843840. Its totient is φ = 110847744.

The previous prime is 155400139. The next prime is 155400163. The reversal of 155400145 is 541004551.

It is a happy number.

155400145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 155400145 - 2⁷ = 155400017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46497 + ... + 49726.

It is an arithmetic number, because the mean of its divisors is an integer number (12990240).

Almost surely, 2^155400145 is an apocalyptic number.

It is an amenable number.

155400145 is a deficient number, since it is larger than the sum of its proper divisors (52443695).

155400145 is a wasteful number, since it uses less digits than its factorization.

155400145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96264.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 155400145 is about 12465.9594496372. The cubic root of 155400145 is about 537.6303862520.

Adding to 155400145 its reverse (541004551), we get a palindrome (696404696).

The spelling of 155400145 in words is "one hundred fifty-five million, four hundred thousand, one hundred forty-five".