55409051 has 2 divisors, whose sum is σ = 55409052. Its totient is φ = 55409050.

The previous prime is 55409027. The next prime is 55409071. The reversal of 55409051 is 15090455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55409051 - 2¹⁰ = 55408027 is a prime.

It is not a weakly prime, because it can be changed into another prime (55409021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27704525 + 27704526.

It is an arithmetic number, because the mean of its divisors is an integer number (27704526).

Almost surely, 2^55409051 is an apocalyptic number.

55409051 is a deficient number, since it is larger than the sum of its proper divisors (1).

55409051 is an equidigital number, since it uses as much as digits as its factorization.

55409051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 55409051 is about 7443.7256128904. The cubic root of 55409051 is about 381.2357072130.

The spelling of 55409051 in words is "fifty-five million, four hundred nine thousand, fifty-one".