151997773 has 2 divisors, whose sum is σ = 151997774. Its totient is φ = 151997772.

The previous prime is 151997771. The next prime is 151997789. The reversal of 151997773 is 377799151.

151997773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144528484 + 7469289 = 12022^2 + 2733^2 .

It is a cyclic number.

It is not a de Polignac number, because 151997773 - 2¹ = 151997771 is a prime.

It is a super-3 number, since 3×151997773³ (a number of 26 digits) contains 333 as substring.

Together with 151997771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151997771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75998886 + 75998887.

It is an arithmetic number, because the mean of its divisors is an integer number (75998887).

Almost surely, 2^151997773 is an apocalyptic number.

It is an amenable number.

151997773 is a deficient number, since it is larger than the sum of its proper divisors (1).

151997773 is an equidigital number, since it uses as much as digits as its factorization.

151997773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 416745, while the sum is 49.

The square root of 151997773 is about 12328.7376888309. The cubic root of 151997773 is about 533.6777233586.

The spelling of 151997773 in words is "one hundred fifty-one million, nine hundred ninety-seven thousand, seven hundred seventy-three".