551238406 has 16 divisors (see below), whose sum is σ = 841181760. Its totient is φ = 270884800.

The previous prime is 551238361. The next prime is 551238407. The reversal of 551238406 is 604832155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551238407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17715 + ... + 37633.

It is an arithmetic number, because the mean of its divisors is an integer number (52573860).

Almost surely, 2^551238406 is an apocalyptic number.

551238406 is a deficient number, since it is larger than the sum of its proper divisors (289943354).

551238406 is a wasteful number, since it uses less digits than its factorization.

551238406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20159.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 551238406 is about 23478.4668579531. The cubic root of 551238406 is about 819.9357504687.

The spelling of 551238406 in words is "five hundred fifty-one million, two hundred thirty-eight thousand, four hundred six".