155512545 has 16 divisors (see below), whose sum is σ = 259638912. Its totient is φ = 79333760.

The previous prime is 155512541. The next prime is 155512559. The reversal of 155512545 is 545215551.

155512545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155512545 - 2² = 155512541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155512541) 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, 225036 + ... + 225725.

It is an arithmetic number, because the mean of its divisors is an integer number (16227432).

Almost surely, 2^155512545 is an apocalyptic number.

155512545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155512545 is a deficient number, since it is larger than the sum of its proper divisors (104126367).

155512545 is a wasteful number, since it uses less digits than its factorization.

155512545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450792.

The product of its digits is 25000, while the sum is 33.

The square root of 155512545 is about 12470.4669118682. The cubic root of 155512545 is about 537.7599766326.

The spelling of 155512545 in words is "one hundred fifty-five million, five hundred twelve thousand, five hundred forty-five".