30145497 has 4 divisors (see below), whose sum is σ = 40194000. Its totient is φ = 20096996.

The previous prime is 30145483. The next prime is 30145561. The reversal of 30145497 is 79454103.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79454103 = 3 ⋅26484701.

It is a cyclic number.

It is not a de Polignac number, because 30145497 - 2⁴ = 30145481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30145447) 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, 5024247 + ... + 5024252.

It is an arithmetic number, because the mean of its divisors is an integer number (10048500).

Almost surely, 2^30145497 is an apocalyptic number.

It is an amenable number.

30145497 is a deficient number, since it is larger than the sum of its proper divisors (10048503).

30145497 is a wasteful number, since it uses less digits than its factorization.

30145497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048502.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 30145497 is about 5490.4915080528. The cubic root of 30145497 is about 311.2247662645.

The spelling of 30145497 in words is "thirty million, one hundred forty-five thousand, four hundred ninety-seven".