551233140 has 48 divisors (see below), whose sum is σ = 1544683392. Its totient is φ = 146878336.

The previous prime is 551233127. The next prime is 551233153. The reversal of 551233140 is 41332155.

It is an interprime number because it is at equal distance from previous prime (551233127) and next prime (551233153).

It is a self number, because there is not a number n which added to its sum of digits gives 551233140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93562 + ... + 99278.

It is an arithmetic number, because the mean of its divisors is an integer number (32180904).

Almost surely, 2^551233140 is an apocalyptic number.

It is an amenable number.

551233140 is an abundant number, since it is smaller than the sum of its proper divisors (993450252).

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

551233140 is a wasteful number, since it uses less digits than its factorization.

551233140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7336 (or 7334 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 551233140 is about 23478.3547123728. The cubic root of 551233140 is about 819.9331395019.

Adding to 551233140 its reverse (41332155), we get a palindrome (592565295).

The spelling of 551233140 in words is "five hundred fifty-one million, two hundred thirty-three thousand, one hundred forty".