51909322 has 16 divisors (see below), whose sum is σ = 79814592. Its totient is φ = 25312320.

The previous prime is 51909317. The next prime is 51909323. The reversal of 51909322 is 22390915.

It is not an unprimeable number, because it can be changed into a prime (51909323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11922 + ... + 15682.

It is an arithmetic number, because the mean of its divisors is an integer number (4988412).

Almost surely, 2^51909322 is an apocalyptic number.

51909322 is a deficient number, since it is larger than the sum of its proper divisors (27905270).

51909322 is a wasteful number, since it uses less digits than its factorization.

51909322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 51909322 is about 7204.8124194874. The cubic root of 51909322 is about 373.0340300587.

The spelling of 51909322 in words is "fifty-one million, nine hundred nine thousand, three hundred twenty-two".