551253550 has 48 divisors (see below), whose sum is σ = 1058927760. Its totient is φ = 213373440.

The previous prime is 551253541. The next prime is 551253551. The reversal of 551253550 is 55352155.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551253551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241816 + ... + 244084.

It is an arithmetic number, because the mean of its divisors is an integer number (22060995).

Almost surely, 2^551253550 is an apocalyptic number.

551253550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551253550 is a deficient number, since it is larger than the sum of its proper divisors (507674210).

551253550 is a wasteful number, since it uses less digits than its factorization.

551253550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 551253550 is about 23478.7893640196. The cubic root of 551253550 is about 819.9432590125.

The spelling of 551253550 in words is "five hundred fifty-one million, two hundred fifty-three thousand, five hundred fifty".