55051477 has 16 divisors (see below), whose sum is σ = 60505200. Its totient is φ = 49784832.

The previous prime is 55051439. The next prime is 55051487. The reversal of 55051477 is 77415055.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1454436 + 53597041 = 1206^2 + 7321^2 .

It is a cyclic number.

It is not a de Polignac number, because 55051477 - 2¹⁵ = 55018709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55051427) 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, 187743 + ... + 188035.

It is an arithmetic number, because the mean of its divisors is an integer number (3781575).

Almost surely, 2^55051477 is an apocalyptic number.

It is an amenable number.

55051477 is a deficient number, since it is larger than the sum of its proper divisors (5453723).

55051477 is a wasteful number, since it uses less digits than its factorization.

55051477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 55051477 is about 7419.6682540394. The cubic root of 55051477 is about 380.4138542825.

The spelling of 55051477 in words is "fifty-five million, fifty-one thousand, four hundred seventy-seven".