77201055 has 48 divisors (see below), whose sum is σ = 138715200. Its totient is φ = 39688704.

The previous prime is 77201027. The next prime is 77201057. The reversal of 77201055 is 55010277.

It is not a de Polignac number, because 77201055 - 2¹⁰ = 77200031 is a prime.

It is a super-2 number, since 2×77201055² = 11920005786226050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77201057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 331219 + ... + 331451.

It is an arithmetic number, because the mean of its divisors is an integer number (2889900).

Almost surely, 2^77201055 is an apocalyptic number.

77201055 is a deficient number, since it is larger than the sum of its proper divisors (61514145).

77201055 is a wasteful number, since it uses less digits than its factorization.

77201055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 77201055 is about 8786.4130906759. The cubic root of 77201055 is about 425.8020471557.

The spelling of 77201055 in words is "seventy-seven million, two hundred one thousand, fifty-five".