55771026 has 16 divisors (see below), whose sum is σ = 111752544. Its totient is φ = 18555264.

The previous prime is 55771013. The next prime is 55771069. The reversal of 55771026 is 62017755.

It is a super-2 number, since 2×55771026² = 6220814682185352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5215 + ... + 11778.

It is an arithmetic number, because the mean of its divisors is an integer number (6984534).

Almost surely, 2^55771026 is an apocalyptic number.

55771026 is an abundant number, since it is smaller than the sum of its proper divisors (55981518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55771026 is a wasteful number, since it uses less digits than its factorization.

55771026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17545.

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 55771026 is about 7468.0001339047. Note that the first 3 decimals coincide. The cubic root of 55771026 is about 382.0640819735.

The spelling of 55771026 in words is "fifty-five million, seven hundred seventy-one thousand, twenty-six".