55801007 has 2 divisors, whose sum is σ = 55801008. Its totient is φ = 55801006.

The previous prime is 55801001. The next prime is 55801019. The reversal of 55801007 is 70010855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55801007 - 2⁴ = 55800991 is a prime.

It is a super-2 number, since 2×55801007² = 6227504764428098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55801001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27900503 + 27900504.

It is an arithmetic number, because the mean of its divisors is an integer number (27900504).

Almost surely, 2^55801007 is an apocalyptic number.

55801007 is a deficient number, since it is larger than the sum of its proper divisors (1).

55801007 is an equidigital number, since it uses as much as digits as its factorization.

55801007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 55801007 is about 7470.0071619778. The cubic root of 55801007 is about 382.1325321593.

The spelling of 55801007 in words is "fifty-five million, eight hundred one thousand, seven".