55101481 has 4 divisors (see below), whose sum is σ = 55207764. Its totient is φ = 54995200.

The previous prime is 55101451. The next prime is 55101509. The reversal of 55101481 is 18410155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18410155 = 5 ⋅3682031.

It can be written as a sum of positive squares in 2 ways, for example, as 6325225 + 48776256 = 2515^2 + 6984^2 .

It is a cyclic number.

It is not a de Polignac number, because 55101481 - 2¹¹ = 55099433 is a prime.

It is a super-2 number, since 2×55101481² = 6072346416786722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55101401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52360 + ... + 53401.

It is an arithmetic number, because the mean of its divisors is an integer number (13801941).

Almost surely, 2^55101481 is an apocalyptic number.

It is an amenable number.

55101481 is a deficient number, since it is larger than the sum of its proper divisors (106283).

55101481 is a wasteful number, since it uses less digits than its factorization.

55101481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106282.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 55101481 is about 7423.0371816393. The cubic root of 55101481 is about 380.5289977745.

The spelling of 55101481 in words is "fifty-five million, one hundred one thousand, four hundred eighty-one".