30551550 has 48 divisors (see below), whose sum is σ = 80231472. Its totient is φ = 7667200.

The previous prime is 30551503. The next prime is 30551561. The reversal of 30551550 is 5515503.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30551550.

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, 3441 + ... + 8540.

It is an arithmetic number, because the mean of its divisors is an integer number (1671489).

Almost surely, 2^30551550 is an apocalyptic number.

30551550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30551550 is an abundant number, since it is smaller than the sum of its proper divisors (49679922).

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

30551550 is a wasteful number, since it uses less digits than its factorization.

30551550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12013 (or 12008 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 30551550 is about 5527.3456559184. The cubic root of 30551550 is about 312.6159143324.

The spelling of 30551550 in words is "thirty million, five hundred fifty-one thousand, five hundred fifty".