51380367 has 16 divisors (see below), whose sum is σ = 71715840. Its totient is φ = 32658912.

The previous prime is 51380359. The next prime is 51380369. The reversal of 51380367 is 76308315.

It is a happy number.

It is not a de Polignac number, because 51380367 - 2³ = 51380359 is a prime.

It is a super-2 number, since 2×51380367² = 5279884226109378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51380369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24309 + ... + 26337.

It is an arithmetic number, because the mean of its divisors is an integer number (4482240).

Almost surely, 2^51380367 is an apocalyptic number.

51380367 is a deficient number, since it is larger than the sum of its proper divisors (20335473).

51380367 is a wasteful number, since it uses less digits than its factorization.

51380367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 51380367 is about 7168.0099748815. The cubic root of 51380367 is about 371.7626318406.

The spelling of 51380367 in words is "fifty-one million, three hundred eighty thousand, three hundred sixty-seven".