77528023 has 2 divisors, whose sum is σ = 77528024. Its totient is φ = 77528022.

The previous prime is 77527979. The next prime is 77528053. The reversal of 77528023 is 32082577.

It is a strong prime.

It is an emirp because it is prime and its reverse (32082577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77528023 - 2¹³ = 77519831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77528023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77528053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38764011 + 38764012.

It is an arithmetic number, because the mean of its divisors is an integer number (38764012).

Almost surely, 2^77528023 is an apocalyptic number.

77528023 is a deficient number, since it is larger than the sum of its proper divisors (1).

77528023 is an equidigital number, since it uses as much as digits as its factorization.

77528023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 77528023 is about 8804.9998864282. Note that the first 3 decimals coincide. The cubic root of 77528023 is about 426.4023306389.

The spelling of 77528023 in words is "seventy-seven million, five hundred twenty-eight thousand, twenty-three".