510551401 has 4 divisors (see below), whose sum is σ = 532749312. Its totient is φ = 488353492.

The previous prime is 510551399. The next prime is 510551407. The reversal of 510551401 is 104155015.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104155015 = 5 ⋅20831003.

It is a cyclic number.

It is not a de Polignac number, because 510551401 - 2¹ = 510551399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (510551407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11098921 + ... + 11098966.

It is an arithmetic number, because the mean of its divisors is an integer number (133187328).

Almost surely, 2^510551401 is an apocalyptic number.

It is an amenable number.

510551401 is a deficient number, since it is larger than the sum of its proper divisors (22197911).

510551401 is a wasteful number, since it uses less digits than its factorization.

510551401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22197910.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 510551401 is about 22595.3845065757. The cubic root of 510551401 is about 799.2448086861.

The spelling of 510551401 in words is "five hundred ten million, five hundred fifty-one thousand, four hundred one".