151564493 has 2 divisors, whose sum is σ = 151564494. Its totient is φ = 151564492.

The previous prime is 151564489. The next prime is 151564499. The reversal of 151564493 is 394465151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131377444 + 20187049 = 11462^2 + 4493^2 .

It is an emirp because it is prime and its reverse (394465151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151564493 - 2² = 151564489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151564499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75782246 + 75782247.

It is an arithmetic number, because the mean of its divisors is an integer number (75782247).

Almost surely, 2^151564493 is an apocalyptic number.

It is an amenable number.

151564493 is a deficient number, since it is larger than the sum of its proper divisors (1).

151564493 is an equidigital number, since it uses as much as digits as its factorization.

151564493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 151564493 is about 12311.1531953753. The cubic root of 151564493 is about 533.1701458635.

The spelling of 151564493 in words is "one hundred fifty-one million, five hundred sixty-four thousand, four hundred ninety-three".