51097407 has 8 divisors (see below), whose sum is σ = 69971376. Its totient is φ = 33144192.

The previous prime is 51097381. The next prime is 51097471. The reversal of 51097407 is 70479015.

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

It is not a de Polignac number, because 51097407 - 2¹⁹ = 50573119 is a prime.

It is a super-2 number, since 2×51097407² = 5221890004247298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51093407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230058 + ... + 230279.

It is an arithmetic number, because the mean of its divisors is an integer number (8746422).

Almost surely, 2^51097407 is an apocalyptic number.

51097407 is a deficient number, since it is larger than the sum of its proper divisors (18873969).

51097407 is a wasteful number, since it uses less digits than its factorization.

51097407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460377.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 51097407 is about 7148.2450293761. The cubic root of 51097407 is about 371.0789228666.

The spelling of 51097407 in words is "fifty-one million, ninety-seven thousand, four hundred seven".