77566054 has 4 divisors (see below), whose sum is σ = 116349084. Its totient is φ = 38783026.

The previous prime is 77566043. The next prime is 77566063. The reversal of 77566054 is 45066577.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45066577 = 79 ⋅570463.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 77565998 and 77566016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19391512 + ... + 19391515.

It is an arithmetic number, because the mean of its divisors is an integer number (29087271).

Almost surely, 2^77566054 is an apocalyptic number.

77566054 is a deficient number, since it is larger than the sum of its proper divisors (38783030).

77566054 is a wasteful number, since it uses less digits than its factorization.

77566054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38783029.

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 77566054 is about 8807.1592468855. The cubic root of 77566054 is about 426.4720424476.

The spelling of 77566054 in words is "seventy-seven million, five hundred sixty-six thousand, fifty-four".