30450137 has 4 divisors (see below), whose sum is σ = 31774080. Its totient is φ = 29126196.

The previous prime is 30450089. The next prime is 30450139. The reversal of 30450137 is 73105403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30450137 - 2⁶ = 30450073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1323919 = 30450137 / (3 + 0 + 4 + 5 + 0 + 1 + 3 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30450139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661937 + ... + 661982.

It is an arithmetic number, because the mean of its divisors is an integer number (7943520).

Almost surely, 2^30450137 is an apocalyptic number.

It is an amenable number.

30450137 is a deficient number, since it is larger than the sum of its proper divisors (1323943).

30450137 is a wasteful number, since it uses less digits than its factorization.

30450137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323942.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 30450137 is about 5518.1642780910. The cubic root of 30450137 is about 312.2696311784.

The spelling of 30450137 in words is "thirty million, four hundred fifty thousand, one hundred thirty-seven".