154202245 has 4 divisors (see below), whose sum is σ = 185042700. Its totient is φ = 123361792.

The previous prime is 154202221. The next prime is 154202261. The reversal of 154202245 is 542202451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542202451 = 7 ⋅77457493.

It can be written as a sum of positive squares in 2 ways, for example, as 115476516 + 38725729 = 10746^2 + 6223^2 .

It is a cyclic number.

It is not a de Polignac number, because 154202245 - 2⁷ = 154202117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15420220 + ... + 15420229.

It is an arithmetic number, because the mean of its divisors is an integer number (46260675).

Almost surely, 2^154202245 is an apocalyptic number.

It is an amenable number.

154202245 is a deficient number, since it is larger than the sum of its proper divisors (30840455).

154202245 is an equidigital number, since it uses as much as digits as its factorization.

154202245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30840454.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 154202245 is about 12417.8196556400. The cubic root of 154202245 is about 536.2453824203.

Adding to 154202245 its reverse (542202451), we get a palindrome (696404696).

The spelling of 154202245 in words is "one hundred fifty-four million, two hundred two thousand, two hundred forty-five".