77252229 has 6 divisors (see below), whose sum is σ = 111586566. Its totient is φ = 51501480.

The previous prime is 77252191. The next prime is 77252243. The reversal of 77252229 is 92225277.

It can be written as a sum of positive squares in only one way, i.e., 62252100 + 15000129 = 7890^2 + 3873^2 .

It is not a de Polignac number, because 77252229 - 2⁹ = 77251717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77252193 and 77252202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77252269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4291782 + ... + 4291799.

It is an arithmetic number, because the mean of its divisors is an integer number (18597761).

Almost surely, 2^77252229 is an apocalyptic number.

It is an amenable number.

77252229 is a deficient number, since it is larger than the sum of its proper divisors (34334337).

77252229 is a wasteful number, since it uses less digits than its factorization.

77252229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8583587 (or 8583584 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 77252229 is about 8789.3247180884. The cubic root of 77252229 is about 425.8961096920.

The spelling of 77252229 in words is "seventy-seven million, two hundred fifty-two thousand, two hundred twenty-nine".