551545401 has 16 divisors (see below), whose sum is σ = 817387200. Its totient is φ = 327961920.

The previous prime is 551545381. The next prime is 551545409. The reversal of 551545401 is 104545155.

It is not a de Polignac number, because 551545401 - 2⁵ = 551545369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551545409) 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 15 ways as a sum of consecutive naturals, for example, 155926 + ... + 159423.

It is an arithmetic number, because the mean of its divisors is an integer number (51086700).

Almost surely, 2^551545401 is an apocalyptic number.

It is an amenable number.

551545401 is a deficient number, since it is larger than the sum of its proper divisors (265841799).

551545401 is a wasteful number, since it uses less digits than its factorization.

551545401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315416.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 551545401 is about 23485.0037470723. The cubic root of 551545401 is about 820.0879347498.

The spelling of 551545401 in words is "five hundred fifty-one million, five hundred forty-five thousand, four hundred one".