51454968 has 16 divisors (see below), whose sum is σ = 128637480. Its totient is φ = 17151648.

The previous prime is 51454967. The next prime is 51454969. The reversal of 51454968 is 86945415.

It is an interprime number because it is at equal distance from previous prime (51454967) and next prime (51454969).

It is a super-2 number, since 2×51454968² = 5295227463762048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51454967) 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, 1071955 + ... + 1072002.

Almost surely, 2^51454968 is an apocalyptic number.

It is an amenable number.

51454968 is an abundant number, since it is smaller than the sum of its proper divisors (77182512).

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

51454968 is a wasteful number, since it uses less digits than its factorization.

51454968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143966 (or 2143962 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 51454968 is about 7173.2118329239. The cubic root of 51454968 is about 371.9424700027.

The spelling of 51454968 in words is "fifty-one million, four hundred fifty-four thousand, nine hundred sixty-eight".