51671015 has 16 divisors (see below), whose sum is σ = 67836960. Its totient is φ = 37470720.

The previous prime is 51670991. The next prime is 51671021. The reversal of 51671015 is 51017615.

It is not a de Polignac number, because 51671015 - 2¹⁰ = 51669991 is a prime.

It is a super-2 number, since 2×51671015² = 5339787582260450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21347 + ... + 23643.

It is an arithmetic number, because the mean of its divisors is an integer number (4239810).

Almost surely, 2^51671015 is an apocalyptic number.

51671015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51671015 is a deficient number, since it is larger than the sum of its proper divisors (16165945).

51671015 is a wasteful number, since it uses less digits than its factorization.

51671015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 51671015 is about 7188.2553516135. The cubic root of 51671015 is about 372.4623086948.

The spelling of 51671015 in words is "fifty-one million, six hundred seventy-one thousand, fifteen".