30545550 has 72 divisors (see below), whose sum is σ = 93799056. Its totient is φ = 6981120.

The previous prime is 30545507. The next prime is 30545551. The reversal of 30545550 is 5554503.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30545551) 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, 1699 + ... + 7998.

Almost surely, 2^30545550 is an apocalyptic number.

30545550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30545550 is an abundant number, since it is smaller than the sum of its proper divisors (63253506).

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

30545550 is a wasteful number, since it uses less digits than its factorization.

30545550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9722 (or 9714 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 30545550 is about 5526.8028732713. The cubic root of 30545550 is about 312.5954481772.

The spelling of 30545550 in words is "thirty million, five hundred forty-five thousand, five hundred fifty".