154400453 has 4 divisors (see below), whose sum is σ = 155046720. Its totient is φ = 153754188.

The previous prime is 154400423. The next prime is 154400461. The reversal of 154400453 is 354004451.

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: 354004451 = 79 ⋅4481069.

It is a cyclic number.

It is not a de Polignac number, because 154400453 - 2¹⁰ = 154399429 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 (154400413) 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, 322775 + ... + 323252.

It is an arithmetic number, because the mean of its divisors is an integer number (38761680).

Almost surely, 2^154400453 is an apocalyptic number.

It is an amenable number.

154400453 is a deficient number, since it is larger than the sum of its proper divisors (646267).

154400453 is an equidigital number, since it uses as much as digits as its factorization.

154400453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646266.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 154400453 is about 12425.7978818263. The cubic root of 154400453 is about 536.4750431864.

The spelling of 154400453 in words is "one hundred fifty-four million, four hundred thousand, four hundred fifty-three".