3550401 has 6 divisors (see below), whose sum is σ = 5128370. Its totient is φ = 2366928.

The previous prime is 3550387. The next prime is 3550411. The reversal of 3550401 is 1040553.

It can be written as a sum of positive squares in only one way, i.e., 1962801 + 1587600 = 1401^2 + 1260^2 .

It is not a de Polignac number, because 3550401 - 2¹⁴ = 3534017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3550411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197236 + ... + 197253.

Almost surely, 2^3550401 is an apocalyptic number.

It is an amenable number.

3550401 is a deficient number, since it is larger than the sum of its proper divisors (1577969).

3550401 is a wasteful number, since it uses less digits than its factorization.

3550401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394495 (or 394492 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 3550401 is about 1884.2507794877. The cubic root of 3550401 is about 152.5547738387.

Adding to 3550401 its reverse (1040553), we get a palindrome (4590954).

The spelling of 3550401 in words is "three million, five hundred fifty thousand, four hundred one".