51961450 has 12 divisors (see below), whose sum is σ = 96648390. Its totient is φ = 20784560.

The previous prime is 51961433. The next prime is 51961451. The reversal of 51961450 is 5416915.

It can be written as a sum of positive squares in 3 ways, for example, as 34093921 + 17867529 = 5839^2 + 4227^2 .

It is a super-2 number, since 2×51961450² = 5399984572205000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51961451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 519565 + ... + 519664.

Almost surely, 2^51961450 is an apocalyptic number.

51961450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51961450 is a deficient number, since it is larger than the sum of its proper divisors (44686940).

51961450 is a wasteful number, since it uses less digits than its factorization.

51961450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039241 (or 1039236 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 51961450 is about 7208.4290937763. The cubic root of 51961450 is about 373.1588567864.

The spelling of 51961450 in words is "fifty-one million, nine hundred sixty-one thousand, four hundred fifty".