51672205 has 8 divisors (see below), whose sum is σ = 66776472. Its totient is φ = 38157888.

The previous prime is 51672199. The next prime is 51672211. The reversal of 51672205 is 50227615.

It is an interprime number because it is at equal distance from previous prime (51672199) and next prime (51672211).

It can be written as a sum of positive squares in 4 ways, for example, as 2377764 + 49294441 = 1542^2 + 7021^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51672205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397414 + ... + 397543.

It is an arithmetic number, because the mean of its divisors is an integer number (8347059).

Almost surely, 2^51672205 is an apocalyptic number.

It is an amenable number.

51672205 is a deficient number, since it is larger than the sum of its proper divisors (15104267).

51672205 is a wasteful number, since it uses less digits than its factorization.

51672205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794975.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 51672205 is about 7188.3381250467. The cubic root of 51672205 is about 372.4651679815.

The spelling of 51672205 in words is "fifty-one million, six hundred seventy-two thousand, two hundred five".