154253245 has 4 divisors (see below), whose sum is σ = 185103900. Its totient is φ = 123402592.

The previous prime is 154253243. The next prime is 154253263. The reversal of 154253245 is 542352451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542352451 = 3559 ⋅152389.

It can be written as a sum of positive squares in 2 ways, for example, as 67930564 + 86322681 = 8242^2 + 9291^2 .

It is a cyclic number.

It is not a de Polignac number, because 154253245 - 2¹ = 154253243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154253243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15425320 + ... + 15425329.

It is an arithmetic number, because the mean of its divisors is an integer number (46275975).

Almost surely, 2^154253245 is an apocalyptic number.

It is an amenable number.

154253245 is a deficient number, since it is larger than the sum of its proper divisors (30850655).

154253245 is an equidigital number, since it uses as much as digits as its factorization.

154253245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30850654.

The product of its digits is 24000, while the sum is 31.

The square root of 154253245 is about 12419.8729864681. The cubic root of 154253245 is about 536.3044941840.

The spelling of 154253245 in words is "one hundred fifty-four million, two hundred fifty-three thousand, two hundred forty-five".