154521049 has 2 divisors, whose sum is σ = 154521050. Its totient is φ = 154521048.

The previous prime is 154520983. The next prime is 154521079. The reversal of 154521049 is 940125451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87984400 + 66536649 = 9380^2 + 8157^2 .

It is a cyclic number.

It is not a de Polignac number, because 154521049 - 2¹³ = 154512857 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154521049.

It is not a weakly prime, because it can be changed into another prime (154521079) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77260524 + 77260525.

It is an arithmetic number, because the mean of its divisors is an integer number (77260525).

Almost surely, 2^154521049 is an apocalyptic number.

It is an amenable number.

154521049 is a deficient number, since it is larger than the sum of its proper divisors (1).

154521049 is an equidigital number, since it uses as much as digits as its factorization.

154521049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 154521049 is about 12430.6495807741. The cubic root of 154521049 is about 536.6146798829.

The spelling of 154521049 in words is "one hundred fifty-four million, five hundred twenty-one thousand, forty-nine".