154621252 has 6 divisors (see below), whose sum is σ = 270587198. Its totient is φ = 77310624.

The previous prime is 154621217. The next prime is 154621267. The reversal of 154621252 is 252126451.

It can be written as a sum of positive squares in only one way, i.e., 92621376 + 61999876 = 9624^2 + 7874^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 154621252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19327653 + ... + 19327660.

Almost surely, 2^154621252 is an apocalyptic number.

It is an amenable number.

154621252 is a deficient number, since it is larger than the sum of its proper divisors (115965946).

154621252 is a wasteful number, since it uses less digits than its factorization.

154621252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38655317 (or 38655315 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 154621252 is about 12434.6794088147. The cubic root of 154621252 is about 536.7306485107.

The spelling of 154621252 in words is "one hundred fifty-four million, six hundred twenty-one thousand, two hundred fifty-two".