147274549 has 2 divisors, whose sum is σ = 147274550. Its totient is φ = 147274548.

The previous prime is 147274493. The next prime is 147274559. The reversal of 147274549 is 945472741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115992900 + 31281649 = 10770^2 + 5593^2 .

It is a cyclic number.

It is not a de Polignac number, because 147274549 - 2¹⁵ = 147241781 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147274559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73637274 + 73637275.

It is an arithmetic number, because the mean of its divisors is an integer number (73637275).

Almost surely, 2^147274549 is an apocalyptic number.

It is an amenable number.

147274549 is a deficient number, since it is larger than the sum of its proper divisors (1).

147274549 is an equidigital number, since it uses as much as digits as its factorization.

147274549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 43.

The square root of 147274549 is about 12135.6725812787. The cubic root of 147274549 is about 528.0915687625.

The spelling of 147274549 in words is "one hundred forty-seven million, two hundred seventy-four thousand, five hundred forty-nine".