77323153 has 2 divisors, whose sum is σ = 77323154. Its totient is φ = 77323152.

The previous prime is 77323139. The next prime is 77323187. The reversal of 77323153 is 35132377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64770304 + 12552849 = 8048^2 + 3543^2 .

It is a cyclic number.

It is not a de Polignac number, because 77323153 - 2²¹ = 75226001 is a prime.

It is a super-2 number, since 2×77323153² = 11957739979722818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77323853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38661576 + 38661577.

It is an arithmetic number, because the mean of its divisors is an integer number (38661577).

Almost surely, 2^77323153 is an apocalyptic number.

It is an amenable number.

77323153 is a deficient number, since it is larger than the sum of its proper divisors (1).

77323153 is an equidigital number, since it uses as much as digits as its factorization.

77323153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 31.

The square root of 77323153 is about 8793.3584596558. The cubic root of 77323153 is about 426.0264058955.

The spelling of 77323153 in words is "seventy-seven million, three hundred twenty-three thousand, one hundred fifty-three".