55016401 has 12 divisors (see below), whose sum is σ = 60769296. Its totient is φ = 49769720.

The previous prime is 55016399. The next prime is 55016407. The reversal of 55016401 is 10461055.

55016401 = T₃₅₉ + T₃₆₀ + ... + T₇₂₁.

It is not a de Polignac number, because 55016401 - 2¹ = 55016399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55016407) 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, 26466 + ... + 28468.

It is an arithmetic number, because the mean of its divisors is an integer number (5064108).

Almost surely, 2^55016401 is an apocalyptic number.

It is an amenable number.

55016401 is a deficient number, since it is larger than the sum of its proper divisors (5752895).

55016401 is a wasteful number, since it uses less digits than its factorization.

55016401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 55016401 is about 7417.3041598683. The cubic root of 55016401 is about 380.3330436668. Note that the first 3 decimals are identical.

Adding to 55016401 its reverse (10461055), we get a palindrome (65477456).

The spelling of 55016401 in words is "fifty-five million, sixteen thousand, four hundred one".