55430651 has 2 divisors, whose sum is σ = 55430652. Its totient is φ = 55430650.

The previous prime is 55430597. The next prime is 55430653. The reversal of 55430651 is 15603455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55430651 is a prime.

Together with 55430653, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3306386 and since 55430651 and 3306386 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (55430653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27715325 + 27715326.

It is an arithmetic number, because the mean of its divisors is an integer number (27715326).

Almost surely, 2^55430651 is an apocalyptic number.

55430651 is a deficient number, since it is larger than the sum of its proper divisors (1).

55430651 is an equidigital number, since it uses as much as digits as its factorization.

55430651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 55430651 is about 7445.1763578843. The cubic root of 55430651 is about 381.2852395627.

The spelling of 55430651 in words is "fifty-five million, four hundred thirty thousand, six hundred fifty-one".