551671428 has 72 divisors (see below), whose sum is σ = 1617050176. Its totient is φ = 143288640.

The previous prime is 551671361. The next prime is 551671429. The reversal of 551671428 is 824176155.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (551671429) 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, 16975 + ... + 37302.

Almost surely, 2^551671428 is an apocalyptic number.

It is an amenable number.

551671428 is an abundant number, since it is smaller than the sum of its proper divisors (1065378748).

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

551671428 is a wasteful number, since it uses less digits than its factorization.

551671428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54313 (or 54300 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 551671428 is about 23487.6867315621. The cubic root of 551671428 is about 820.1503928001.

The spelling of 551671428 in words is "five hundred fifty-one million, six hundred seventy-one thousand, four hundred twenty-eight".