155400545 has 8 divisors (see below), whose sum is σ = 187296360. Its totient is φ = 123776640.

The previous prime is 155400527. The next prime is 155400571. The reversal of 155400545 is 545004551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5607424 + 149793121 = 2368^2 + 12239^2 .

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

It is not a de Polignac number, because 155400545 - 2¹⁴ = 155384161 is a prime.

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, 66716 + ... + 69005.

It is an arithmetic number, because the mean of its divisors is an integer number (23412045).

Almost surely, 2^155400545 is an apocalyptic number.

It is an amenable number.

155400545 is a deficient number, since it is larger than the sum of its proper divisors (31895815).

155400545 is a wasteful number, since it uses less digits than its factorization.

155400545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135955.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 155400545 is about 12465.9754933178. The cubic root of 155400545 is about 537.6308475385.

The spelling of 155400545 in words is "one hundred fifty-five million, four hundred thousand, five hundred forty-five".