147451261 has 2 divisors, whose sum is σ = 147451262. Its totient is φ = 147451260.

The previous prime is 147451259. The next prime is 147451273. The reversal of 147451261 is 162154741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138415225 + 9036036 = 11765^2 + 3006^2 .

It is a cyclic number.

It is not a de Polignac number, because 147451261 - 2¹ = 147451259 is a prime.

Together with 147451259, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147451201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73725630 + 73725631.

It is an arithmetic number, because the mean of its divisors is an integer number (73725631).

Almost surely, 2^147451261 is an apocalyptic number.

It is an amenable number.

147451261 is a deficient number, since it is larger than the sum of its proper divisors (1).

147451261 is an equidigital number, since it uses as much as digits as its factorization.

147451261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 147451261 is about 12142.9510828299. The cubic root of 147451261 is about 528.3027001006.

The spelling of 147451261 in words is "one hundred forty-seven million, four hundred fifty-one thousand, two hundred sixty-one".