551245406 has 4 divisors (see below), whose sum is σ = 826868112. Its totient is φ = 275622702.

The previous prime is 551245403. The next prime is 551245433. The reversal of 551245406 is 604542155.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×551245406² = 607742995272209672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551245403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137811350 + ... + 137811353.

It is an arithmetic number, because the mean of its divisors is an integer number (206717028).

Almost surely, 2^551245406 is an apocalyptic number.

551245406 is a deficient number, since it is larger than the sum of its proper divisors (275622706).

551245406 is a wasteful number, since it uses less digits than its factorization.

551245406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275622705.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 551245406 is about 23478.6159302460. The cubic root of 551245406 is about 819.9392211545.

The spelling of 551245406 in words is "five hundred fifty-one million, two hundred forty-five thousand, four hundred six".