77226552 has 48 divisors (see below), whose sum is σ = 225246840. Its totient is φ = 23761728.

The previous prime is 77226547. The next prime is 77226557. The reversal of 77226552 is 25562277.

It is an interprime number because it is at equal distance from previous prime (77226547) and next prime (77226557).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77226557) 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 in 11 ways as a sum of consecutive naturals, for example, 40318 + ... + 42189.

Almost surely, 2^77226552 is an apocalyptic number.

77226552 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

77226552 is an abundant number, since it is smaller than the sum of its proper divisors (148020288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77226552 is a wasteful number, since it uses less digits than its factorization.

77226552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82532 (or 82525 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 77226552 is about 8787.8639042716. The cubic root of 77226552 is about 425.8489181897.

The spelling of 77226552 in words is "seventy-seven million, two hundred twenty-six thousand, five hundred fifty-two".