77148522 has 48 divisors (see below), whose sum is σ = 188248320. Its totient is φ = 22622400.

The previous prime is 77148521. The next prime is 77148541. The reversal of 77148522 is 22584177.

It is not an unprimeable number, because it can be changed into a prime (77148521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147 + ... + 12422.

It is an arithmetic number, because the mean of its divisors is an integer number (3921840).

Almost surely, 2^77148522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77148522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94124160).

77148522 is an abundant number, since it is smaller than the sum of its proper divisors (111099798).

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

77148522 is a wasteful number, since it uses less digits than its factorization.

77148522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12619 (or 12616 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 77148522 is about 8783.4231367958. The cubic root of 77148522 is about 425.7054434043.

The spelling of 77148522 in words is "seventy-seven million, one hundred forty-eight thousand, five hundred twenty-two".