30242555 has 12 divisors (see below), whose sum is σ = 42216480. Its totient is φ = 20737584.

The previous prime is 30242549. The next prime is 30242567. The reversal of 30242555 is 55524203.

It is not a de Polignac number, because 30242555 - 2⁶ = 30242491 is a prime.

It is a super-2 number, since 2×30242555² = 1829224265856050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61475 + ... + 61964.

It is an arithmetic number, because the mean of its divisors is an integer number (3518040).

Almost surely, 2^30242555 is an apocalyptic number.

30242555 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30242555 is a deficient number, since it is larger than the sum of its proper divisors (11973925).

30242555 is a wasteful number, since it uses less digits than its factorization.

30242555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123458 (or 123451 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 30242555 is about 5499.3231401692. The cubic root of 30242555 is about 311.5584202174.

Adding to 30242555 its reverse (55524203), we get a palindrome (85766758).

The spelling of 30242555 in words is "thirty million, two hundred forty-two thousand, five hundred fifty-five".