30542505 has 32 divisors (see below), whose sum is σ = 58281984. Its totient is φ = 13354176.

The previous prime is 30542503. The next prime is 30542507. The reversal of 30542505 is 50524503.

It is an interprime number because it is at equal distance from previous prime (30542503) and next prime (30542507).

It is not a de Polignac number, because 30542505 - 2¹ = 30542503 is a prime.

It is a super-2 number, since 2×30542505² = 1865689223350050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30542503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3909 + ... + 8738.

It is an arithmetic number, because the mean of its divisors is an integer number (1821312).

Almost surely, 2^30542505 is an apocalyptic number.

30542505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30542505 is a deficient number, since it is larger than the sum of its proper divisors (27739479).

30542505 is a wasteful number, since it uses less digits than its factorization.

30542505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12685.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 30542505 is about 5526.5273906858. The cubic root of 30542505 is about 312.5850605783.

The spelling of 30542505 in words is "thirty million, five hundred forty-two thousand, five hundred five".