55601851 has 2 divisors, whose sum is σ = 55601852. Its totient is φ = 55601850.

The previous prime is 55601839. The next prime is 55601869. The reversal of 55601851 is 15810655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55601851 - 2¹⁹ = 55077563 is a prime.

It is equal to p_3315928 and since 55601851 and 3315928 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 (55601831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27800925 + 27800926.

It is an arithmetic number, because the mean of its divisors is an integer number (27800926).

Almost surely, 2^55601851 is an apocalyptic number.

55601851 is a deficient number, since it is larger than the sum of its proper divisors (1).

55601851 is an equidigital number, since it uses as much as digits as its factorization.

55601851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 55601851 is about 7456.6648711069. The cubic root of 55601851 is about 381.6773748662.

The spelling of 55601851 in words is "fifty-five million, six hundred one thousand, eight hundred fifty-one".