51369587 has 2 divisors, whose sum is σ = 51369588. Its totient is φ = 51369586.

The previous prime is 51369581. The next prime is 51369601. The reversal of 51369587 is 78596315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51369587 - 2¹⁶ = 51304051 is a prime.

It is not a weakly prime, because it can be changed into another prime (51369581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25684793 + 25684794.

It is an arithmetic number, because the mean of its divisors is an integer number (25684794).

Almost surely, 2^51369587 is an apocalyptic number.

51369587 is a deficient number, since it is larger than the sum of its proper divisors (1).

51369587 is an equidigital number, since it uses as much as digits as its factorization.

51369587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 51369587 is about 7167.2579833574. The cubic root of 51369587 is about 371.7366304597.

The spelling of 51369587 in words is "fifty-one million, three hundred sixty-nine thousand, five hundred eighty-seven".