1230551550 has 72 divisors (see below), whose sum is σ = 3395481336. Its totient is φ = 319273920.

The previous prime is 1230551501. The next prime is 1230551551. The reversal of 1230551550 is 551550321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230551551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20304 + ... + 53603.

It is an arithmetic number, because the mean of its divisors is an integer number (47159463).

Almost surely, 2^1230551550 is an apocalyptic number.

1230551550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230551550 is an abundant number, since it is smaller than the sum of its proper divisors (2164929786).

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

1230551550 is a wasteful number, since it uses less digits than its factorization.

1230551550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73962 (or 73954 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 1230551550 is about 35079.2182067959. The cubic root of 1230551550 is about 1071.6013957405.

The spelling of 1230551550 in words is "one billion, two hundred thirty million, five hundred fifty-one thousand, five hundred fifty".