154252251 has 6 divisors (see below), whose sum is σ = 222808820. Its totient is φ = 102834828.

The previous prime is 154252211. The next prime is 154252253. The reversal of 154252251 is 152252451.

154252251 is a `hidden beast` number, since 15 + 425 + 225 + 1 = 666.

It is not a de Polignac number, because 154252251 - 2¹⁴ = 154235867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154252253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8569561 + ... + 8569578.

Almost surely, 2^154252251 is an apocalyptic number.

154252251 is a deficient number, since it is larger than the sum of its proper divisors (68556569).

154252251 is a wasteful number, since it uses less digits than its factorization.

154252251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17139145 (or 17139142 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 154252251 is about 12419.8329698913. The cubic root of 154252251 is about 536.3033422087.

It can be divided in two parts, 154 and 252251, that added together give a triangular number (252405 = T₇₁₀).

The spelling of 154252251 in words is "one hundred fifty-four million, two hundred fifty-two thousand, two hundred fifty-one".