51121546 has 8 divisors (see below), whose sum is σ = 87636960. Its totient is φ = 21909228.

The previous prime is 51121537. The next prime is 51121549. The reversal of 51121546 is 64512115.

It is a happy number.

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

It is a super-2 number, since 2×51121546² = 5226824930860232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51121546.

It is not an unprimeable number, because it can be changed into a prime (51121549) 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, 1825756 + ... + 1825783.

It is an arithmetic number, because the mean of its divisors is an integer number (10954620).

Almost surely, 2^51121546 is an apocalyptic number.

51121546 is a deficient number, since it is larger than the sum of its proper divisors (36515414).

51121546 is a wasteful number, since it uses less digits than its factorization.

51121546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651548.

The product of its digits is 1200, while the sum is 25.

The square root of 51121546 is about 7149.9332864020. The cubic root of 51121546 is about 371.1373476444.

The spelling of 51121546 in words is "fifty-one million, one hundred twenty-one thousand, five hundred forty-six".