553400551 has 4 divisors (see below), whose sum is σ = 603709704. Its totient is φ = 503091400.

The previous prime is 553400543. The next prime is 553400567. The reversal of 553400551 is 155004355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 553400551 - 2³ = 553400543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553403551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25154560 + ... + 25154581.

It is an arithmetic number, because the mean of its divisors is an integer number (150927426).

Almost surely, 2^553400551 is an apocalyptic number.

553400551 is a deficient number, since it is larger than the sum of its proper divisors (50309153).

553400551 is a wasteful number, since it uses less digits than its factorization.

553400551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50309152.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 553400551 is about 23524.4670715406. The cubic root of 553400551 is about 821.0063744391.

It can be divided in two parts, 553 and 400551, that added together give a palindrome (401104).

The spelling of 553400551 in words is "five hundred fifty-three million, four hundred thousand, five hundred fifty-one".