1551165606 has 32 divisors (see below), whose sum is σ = 3482582880. Its totient is φ = 511723008.

The previous prime is 1551165599. The next prime is 1551165607. The reversal of 1551165606 is 6065611551.

It is a super-2 number, since 2×1551165606² = 4812229474474694472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551165607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142831 + ... + 153306.

It is an arithmetic number, because the mean of its divisors is an integer number (108830715).

Almost surely, 2^1551165606 is an apocalyptic number.

1551165606 is an abundant number, since it is smaller than the sum of its proper divisors (1931417274).

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

1551165606 is a wasteful number, since it uses less digits than its factorization.

1551165606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296245 (or 296239 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1551165606 is about 39384.8397990902. The cubic root of 1551165606 is about 1157.5845512302.

The spelling of 1551165606 in words is "one billion, five hundred fifty-one million, one hundred sixty-five thousand, six hundred six".