55125401 has 4 divisors (see below), whose sum is σ = 55160100. Its totient is φ = 55090704.

The previous prime is 55125383. The next prime is 55125431. The reversal of 55125401 is 10452155.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9211225 + 45914176 = 3035^2 + 6776^2 .

It is a cyclic number.

It is not a de Polignac number, because 55125401 - 2⁶ = 55125337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55125431) 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, 14846 + ... + 18183.

It is an arithmetic number, because the mean of its divisors is an integer number (13790025).

Almost surely, 2^55125401 is an apocalyptic number.

It is an amenable number.

55125401 is a deficient number, since it is larger than the sum of its proper divisors (34699).

55125401 is a wasteful number, since it uses less digits than its factorization.

55125401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34698.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 55125401 is about 7424.6482071543. The cubic root of 55125401 is about 380.5840533838.

Adding to 55125401 its reverse (10452155), we get a palindrome (65577556).

It can be divided in two parts, 551 and 25401, that added together give a palindrome (25952).

The spelling of 55125401 in words is "fifty-five million, one hundred twenty-five thousand, four hundred one".