51437290 has 8 divisors (see below), whose sum is σ = 92587140. Its totient is φ = 20574912.

The previous prime is 51437263. The next prime is 51437297. The reversal of 51437290 is 9273415.

It can be written as a sum of positive squares in 2 ways, for example, as 50965321 + 471969 = 7139^2 + 687^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51437297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2571855 + ... + 2571874.

Almost surely, 2^51437290 is an apocalyptic number.

51437290 is a deficient number, since it is larger than the sum of its proper divisors (41149850).

51437290 is a wasteful number, since it uses less digits than its factorization.

51437290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143736.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 51437290 is about 7171.9795035959. The cubic root of 51437290 is about 371.8998699560.

The spelling of 51437290 in words is "fifty-one million, four hundred thirty-seven thousand, two hundred ninety".