30040451 has 4 divisors (see below), whose sum is σ = 34331952. Its totient is φ = 25748952.

The previous prime is 30040441. The next prime is 30040469. The reversal of 30040451 is 15404003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15404003 = 19 ⋅810737.

It is a cyclic number.

It is not a de Polignac number, because 30040451 - 2²² = 25846147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30040441) 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 3 ways as a sum of consecutive naturals, for example, 2145740 + ... + 2145753.

It is an arithmetic number, because the mean of its divisors is an integer number (8582988).

Almost surely, 2^30040451 is an apocalyptic number.

30040451 is a deficient number, since it is larger than the sum of its proper divisors (4291501).

30040451 is an equidigital number, since it uses as much as digits as its factorization.

30040451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291500.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30040451 is about 5480.9169853228. The cubic root of 30040451 is about 310.8628441643.

Adding to 30040451 its reverse (15404003), we get a palindrome (45444454).

The spelling of 30040451 in words is "thirty million, forty thousand, four hundred fifty-one".