30072541 has 4 divisors (see below), whose sum is σ = 31841532. Its totient is φ = 28303552.

The previous prime is 30072533. The next prime is 30072551. The reversal of 30072541 is 14527003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14527003 = 31 ⋅468613.

It can be written as a sum of positive squares in 2 ways, for example, as 14032516 + 16040025 = 3746^2 + 4005^2 .

It is a cyclic number.

It is not a de Polignac number, because 30072541 - 2³ = 30072533 is a prime.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884470 + ... + 884503.

It is an arithmetic number, because the mean of its divisors is an integer number (7960383).

Almost surely, 2^30072541 is an apocalyptic number.

It is an amenable number.

30072541 is a deficient number, since it is larger than the sum of its proper divisors (1768991).

30072541 is a wasteful number, since it uses less digits than its factorization.

30072541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768990.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 30072541 is about 5483.8436338028. The cubic root of 30072541 is about 310.9734953960.

Adding to 30072541 its reverse (14527003), we get a palindrome (44599544).

The spelling of 30072541 in words is "thirty million, seventy-two thousand, five hundred forty-one".