51854069 has 4 divisors (see below), whose sum is σ = 52584480. Its totient is φ = 51123660.

The previous prime is 51854039. The next prime is 51854083. The reversal of 51854069 is 96045815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51854069 - 2¹⁶ = 51788533 is a prime.

It is a super-2 number, since 2×51854069² = 5377688943713522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51854039) 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, 365099 + ... + 365240.

It is an arithmetic number, because the mean of its divisors is an integer number (13146120).

Almost surely, 2^51854069 is an apocalyptic number.

It is an amenable number.

51854069 is a deficient number, since it is larger than the sum of its proper divisors (730411).

51854069 is an equidigital number, since it uses as much as digits as its factorization.

51854069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730410.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 51854069 is about 7200.9769476093. The cubic root of 51854069 is about 372.9016288781.

The spelling of 51854069 in words is "fifty-one million, eight hundred fifty-four thousand, sixty-nine".