551545402 has 8 divisors (see below), whose sum is σ = 829537236. Its totient is φ = 275032992.

The previous prime is 551545381. The next prime is 551545409. The reversal of 551545402 is 204545155.

It can be written as a sum of positive squares in 2 ways, for example, as 551263441 + 281961 = 23479^2 + 531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 368923 + ... + 370414.

Almost surely, 2^551545402 is an apocalyptic number.

551545402 is a deficient number, since it is larger than the sum of its proper divisors (277991834).

551545402 is a wasteful number, since it uses less digits than its factorization.

551545402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739712.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 551545402 is about 23485.0037683625. The cubic root of 551545402 is about 820.0879352454.

The spelling of 551545402 in words is "five hundred fifty-one million, five hundred forty-five thousand, four hundred two".