77534045 has 4 divisors (see below), whose sum is σ = 93040860. Its totient is φ = 62027232.

The previous prime is 77534021. The next prime is 77534057. The reversal of 77534045 is 54043577.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34421689 + 43112356 = 5867^2 + 6566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77534045 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77533996 and 77534014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7753400 + ... + 7753409.

It is an arithmetic number, because the mean of its divisors is an integer number (23260215).

Almost surely, 2^77534045 is an apocalyptic number.

It is an amenable number.

77534045 is a deficient number, since it is larger than the sum of its proper divisors (15506815).

77534045 is a wasteful number, since it uses less digits than its factorization.

77534045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15506814.

The product of its (nonzero) digits is 58800, while the sum is 35.

The square root of 77534045 is about 8805.3418445850. The cubic root of 77534045 is about 426.4133706399.

The spelling of 77534045 in words is "seventy-seven million, five hundred thirty-four thousand, forty-five".