154421357 has 4 divisors (see below), whose sum is σ = 155314140. Its totient is φ = 153528576.

The previous prime is 154421347. The next prime is 154421363. The reversal of 154421357 is 753124451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97101316 + 57320041 = 9854^2 + 7571^2 .

It is a cyclic number.

It is not a de Polignac number, because 154421357 - 2⁸ = 154421101 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 (154421347) 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, 446132 + ... + 446477.

It is an arithmetic number, because the mean of its divisors is an integer number (38828535).

Almost surely, 2^154421357 is an apocalyptic number.

It is an amenable number.

154421357 is a deficient number, since it is larger than the sum of its proper divisors (892783).

154421357 is an equidigital number, since it uses as much as digits as its factorization.

154421357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892782.

The product of its digits is 16800, while the sum is 32.

The square root of 154421357 is about 12426.6390065858. The cubic root of 154421357 is about 536.4992528913.

The spelling of 154421357 in words is "one hundred fifty-four million, four hundred twenty-one thousand, three hundred fifty-seven".