77753121 has 8 divisors (see below), whose sum is σ = 109769184. Its totient is φ = 48786240.

The previous prime is 77753113. The next prime is 77753141. The reversal of 77753121 is 12135777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77753121 - 2³ = 77753113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77753141) 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 7 ways as a sum of consecutive naturals, for example, 762235 + ... + 762336.

It is an arithmetic number, because the mean of its divisors is an integer number (13721148).

Almost surely, 2^77753121 is an apocalyptic number.

It is an amenable number.

77753121 is a deficient number, since it is larger than the sum of its proper divisors (32016063).

77753121 is a wasteful number, since it uses less digits than its factorization.

77753121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524591.

The product of its digits is 10290, while the sum is 33.

The square root of 77753121 is about 8817.7730181719. The cubic root of 77753121 is about 426.8146098153.

Adding to 77753121 its reverse (12135777), we get a palindrome (89888898).

The spelling of 77753121 in words is "seventy-seven million, seven hundred fifty-three thousand, one hundred twenty-one".