30442537 has 2 divisors, whose sum is σ = 30442538. Its totient is φ = 30442536.

The previous prime is 30442499. The next prime is 30442543. The reversal of 30442537 is 73524403.

It is the 2253-rd star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18498601 + 11943936 = 4301^2 + 3456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30442537 is a prime.

It is not a weakly prime, because it can be changed into another prime (30442567) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15221268 + 15221269.

It is an arithmetic number, because the mean of its divisors is an integer number (15221269).

Almost surely, 2^30442537 is an apocalyptic number.

It is an amenable number.

30442537 is a deficient number, since it is larger than the sum of its proper divisors (1).

30442537 is an equidigital number, since it uses as much as digits as its factorization.

30442537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 30442537 is about 5517.4756003085. The cubic root of 30442537 is about 312.2436493941.

The spelling of 30442537 in words is "thirty million, four hundred forty-two thousand, five hundred thirty-seven".