155400516 has 18 divisors (see below), whose sum is σ = 392818062. Its totient is φ = 51800160.

The previous prime is 155400491. The next prime is 155400517. The reversal of 155400516 is 615004551.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 131194116 + 24206400 = 11454^2 + 4920^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 155400516.

It is not an unprimeable number, because it can be changed into a prime (155400517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2158305 + ... + 2158376.

Almost surely, 2^155400516 is an apocalyptic number.

It is an amenable number.

155400516 is an abundant number, since it is smaller than the sum of its proper divisors (237417546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155400516 is a wasteful number, since it uses less digits than its factorization.

155400516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316691 (or 4316686 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 155400516 is about 12465.9743301517. The cubic root of 155400516 is about 537.6308140953.

The spelling of 155400516 in words is "one hundred fifty-five million, four hundred thousand, five hundred sixteen".