55225401 has 80 divisors (see below), whose sum is σ = 101642688. Its totient is φ = 26342400.

The previous prime is 55225399. The next prime is 55225403. The reversal of 55225401 is 10452255.

It is a happy number.

55225401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55225399) and next prime (55225403).

It is not a de Polignac number, because 55225401 - 2¹ = 55225399 is a prime.

It is a super-2 number, since 2×55225401² = 6099689831221602, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55225403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1346941 + ... + 1346981.

Almost surely, 2^55225401 is an apocalyptic number.

55225401 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

55225401 is a deficient number, since it is larger than the sum of its proper divisors (46417287).

55225401 is a wasteful number, since it uses less digits than its factorization.

55225401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 55225401 is about 7431.3794816306. The cubic root of 55225401 is about 380.8140466632.

Adding to 55225401 its reverse (10452255), we get a palindrome (65677656).

It can be divided in two parts, 55 and 225401, that added together give a triangular number (225456 = T₆₇₁).

The spelling of 55225401 in words is "fifty-five million, two hundred twenty-five thousand, four hundred one".