55425401 has 2 divisors, whose sum is σ = 55425402. Its totient is φ = 55425400.

The previous prime is 55425353. The next prime is 55425407. The reversal of 55425401 is 10452455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38738176 + 16687225 = 6224^2 + 4085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55425401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55425407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27712700 + 27712701.

It is an arithmetic number, because the mean of its divisors is an integer number (27712701).

Almost surely, 2^55425401 is an apocalyptic number.

It is an amenable number.

55425401 is a deficient number, since it is larger than the sum of its proper divisors (1).

55425401 is an equidigital number, since it uses as much as digits as its factorization.

55425401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 55425401 is about 7444.8237722595. The cubic root of 55425401 is about 381.2732016338.

Adding to 55425401 its reverse (10452455), we get a palindrome (65877856).

The spelling of 55425401 in words is "fifty-five million, four hundred twenty-five thousand, four hundred one".