30072550 has 12 divisors (see below), whose sum is σ = 55935036. Its totient is φ = 12029000.

The previous prime is 30072533. The next prime is 30072551. The reversal of 30072550 is 5527003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30072551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300676 + ... + 300775.

It is an arithmetic number, because the mean of its divisors is an integer number (4661253).

Almost surely, 2^30072550 is an apocalyptic number.

30072550 is a deficient number, since it is larger than the sum of its proper divisors (25862486).

30072550 is a wasteful number, since it uses less digits than its factorization.

30072550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601463 (or 601458 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 30072550 is about 5483.8444543951. The cubic root of 30072550 is about 310.9735264183.

Adding to 30072550 its reverse (5527003), we get a palindrome (35599553).

The spelling of 30072550 in words is "thirty million, seventy-two thousand, five hundred fifty".