155450550 has 48 divisors (see below), whose sum is σ = 408201552. Its totient is φ = 39014400.

The previous prime is 155450549. The next prime is 155450593. The reversal of 155450550 is 55054551.

It is a super-4 number, since 4×155450550⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27931 + ... + 33030.

It is an arithmetic number, because the mean of its divisors is an integer number (8504199).

Almost surely, 2^155450550 is an apocalyptic number.

155450550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155450550 is an abundant number, since it is smaller than the sum of its proper divisors (252751002).

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

155450550 is a wasteful number, since it uses less digits than its factorization.

155450550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60993 (or 60988 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 155450550 is about 12467.9809913233. The cubic root of 155450550 is about 537.6885078842.

The spelling of 155450550 in words is "one hundred fifty-five million, four hundred fifty thousand, five hundred fifty".