5131561406 has 8 divisors (see below), whose sum is σ = 7700614920. Its totient is φ = 2564689768.

The previous prime is 5131561387. The next prime is 5131561427. The reversal of 5131561406 is 6041651315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539576 + ... + 549003.

It is an arithmetic number, because the mean of its divisors is an integer number (962576865).

Almost surely, 2^5131561406 is an apocalyptic number.

5131561406 is a deficient number, since it is larger than the sum of its proper divisors (2569053514).

5131561406 is a wasteful number, since it uses less digits than its factorization.

5131561406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090938.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 5131561406 is about 71634.9175053619. The cubic root of 5131561406 is about 1724.8440837583.

The spelling of 5131561406 in words is "five billion, one hundred thirty-one million, five hundred sixty-one thousand, four hundred six".