80420551 has 2 divisors, whose sum is σ = 80420552. Its totient is φ = 80420550.

The previous prime is 80420539. The next prime is 80420563. The reversal of 80420551 is 15502408.

It is a balanced prime because it is at equal distance from previous prime (80420539) and next prime (80420563).

It is a cyclic number.

It is not a de Polignac number, because 80420551 - 2⁷ = 80420423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80420531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40210275 + 40210276.

It is an arithmetic number, because the mean of its divisors is an integer number (40210276).

Almost surely, 2^80420551 is an apocalyptic number.

80420551 is the 4011-st centered decagonal number.

80420551 is a deficient number, since it is larger than the sum of its proper divisors (1).

80420551 is an equidigital number, since it uses as much as digits as its factorization.

80420551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 80420551 is about 8967.7506098241. The cubic root of 80420551 is about 431.6406601871.

Adding to 80420551 its reverse (15502408), we get a palindrome (95922959).

The spelling of 80420551 in words is "eighty million, four hundred twenty thousand, five hundred fifty-one".