154800497 has 4 divisors (see below), whose sum is σ = 154943220. Its totient is φ = 154657776.

The previous prime is 154800491. The next prime is 154800509. The reversal of 154800497 is 794008451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 794008451 = 2383 ⋅333197.

It can be written as a sum of positive squares in 2 ways, for example, as 149059681 + 5740816 = 12209^2 + 2396^2 .

It is a cyclic number.

It is not a de Polignac number, because 154800497 - 2⁸ = 154800241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154800497.

It is not an unprimeable number, because it can be changed into a prime (154800491) 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, 69722 + ... + 71907.

It is an arithmetic number, because the mean of its divisors is an integer number (38735805).

Almost surely, 2^154800497 is an apocalyptic number.

It is an amenable number.

154800497 is a deficient number, since it is larger than the sum of its proper divisors (142723).

154800497 is a wasteful number, since it uses less digits than its factorization.

154800497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142722.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 154800497 is about 12441.8847848708. The cubic root of 154800497 is about 536.9379704495.

The spelling of 154800497 in words is "one hundred fifty-four million, eight hundred thousand, four hundred ninety-seven".