51941490 has 16 divisors (see below), whose sum is σ = 124659648. Its totient is φ = 13851056.

The previous prime is 51941453. The next prime is 51941507. The reversal of 51941490 is 9414915.

It is a Curzon 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, 865662 + ... + 865721.

It is an arithmetic number, because the mean of its divisors is an integer number (7791228).

Almost surely, 2^51941490 is an apocalyptic number.

51941490 is an abundant number, since it is smaller than the sum of its proper divisors (72718158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51941490 is a wasteful number, since it uses less digits than its factorization.

51941490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731393.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 51941490 is about 7207.0444705163. The cubic root of 51941490 is about 373.1110700478. Note that the first 3 decimals are identical.

The spelling of 51941490 in words is "fifty-one million, nine hundred forty-one thousand, four hundred ninety".