55201761 has 12 divisors (see below), whose sum is σ = 82485780. Its totient is φ = 35532000.

The previous prime is 55201753. The next prime is 55201763. The reversal of 55201761 is 16710255.

It can be written as a sum of positive squares in 2 ways, for example, as 38750625 + 16451136 = 6225^2 + 4056^2 .

It is not a de Polignac number, because 55201761 - 2³ = 55201753 is a prime.

It is a super-2 number, since 2×55201761² = 6094468835002242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55201763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105490 + ... + 106011.

It is an arithmetic number, because the mean of its divisors is an integer number (6873815).

Almost surely, 2^55201761 is an apocalyptic number.

It is an amenable number.

55201761 is a deficient number, since it is larger than the sum of its proper divisors (27284019).

55201761 is a wasteful number, since it uses less digits than its factorization.

55201761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211536 (or 211533 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 55201761 is about 7429.7887587737. The cubic root of 55201761 is about 380.7597013273.

The spelling of 55201761 in words is "fifty-five million, two hundred one thousand, seven hundred sixty-one".