551245230 has 64 divisors (see below), whose sum is σ = 1556470080. Its totient is φ = 138350592.

The previous prime is 551245183. The next prime is 551245231. The reversal of 551245230 is 32542155.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 551245194 and 551245203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551245231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55459 + ... + 64638.

It is an arithmetic number, because the mean of its divisors is an integer number (24319845).

Almost surely, 2^551245230 is an apocalyptic number.

551245230 is an abundant number, since it is smaller than the sum of its proper divisors (1005224850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551245230 is a wasteful number, since it uses less digits than its factorization.

551245230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120130 (or 120124 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 551245230 is about 23478.6121821542. The cubic root of 551245230 is about 819.9391338919.

Adding to 551245230 its reverse (32542155), we get a palindrome (583787385).

The spelling of 551245230 in words is "five hundred fifty-one million, two hundred forty-five thousand, two hundred thirty".