200400551 has 8 divisors (see below), whose sum is σ = 219038064. Its totient is φ = 182223360.

The previous prime is 200400509. The next prime is 200400559. The reversal of 200400551 is 155004002.

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

It is a cyclic number.

It is not a de Polignac number, because 200400551 - 2¹⁴ = 200384167 is a prime.

It is a super-2 number, since 2×200400551² = 80320761682207202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200400559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114170 + ... + 115911.

It is an arithmetic number, because the mean of its divisors is an integer number (27379758).

Almost surely, 2^200400551 is an apocalyptic number.

200400551 is a deficient number, since it is larger than the sum of its proper divisors (18637513).

200400551 is a wasteful number, since it uses less digits than its factorization.

200400551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230161.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 200400551 is about 14156.2901566759. The cubic root of 200400551 is about 585.1936933793.

Adding to 200400551 its reverse (155004002), we get a palindrome (355404553).

The spelling of 200400551 in words is "two hundred million, four hundred thousand, five hundred fifty-one".