55771707 has 16 divisors (see below), whose sum is σ = 79384320. Its totient is φ = 34725600.

The previous prime is 55771693. The next prime is 55771739. The reversal of 55771707 is 70717755.

It is not a de Polignac number, because 55771707 - 2⁶ = 55771643 is a prime.

It is a super-2 number, since 2×55771707² = 6220966603387698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55771007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2844 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (4961520).

Almost surely, 2^55771707 is an apocalyptic number.

55771707 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

55771707 is a deficient number, since it is larger than the sum of its proper divisors (23612613).

55771707 is a wasteful number, since it uses less digits than its factorization.

55771707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13874.

The product of its (nonzero) digits is 60025, while the sum is 39.

The square root of 55771707 is about 7468.0457283013. The cubic root of 55771707 is about 382.0656370496.

The spelling of 55771707 in words is "fifty-five million, seven hundred seventy-one thousand, seven hundred seven".