51620027 has 8 divisors (see below), whose sum is σ = 54107136. Its totient is φ = 49153192.

The previous prime is 51620021. The next prime is 51620033. The reversal of 51620027 is 72002615.

It is an interprime number because it is at equal distance from previous prime (51620021) and next prime (51620033).

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

It is a cyclic number.

It is not a de Polignac number, because 51620027 - 2⁴ = 51620011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51619984 and 51620011.

It is not an unprimeable number, because it can be changed into a prime (51620021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278 + ... + 10164.

It is an arithmetic number, because the mean of its divisors is an integer number (6763392).

Almost surely, 2^51620027 is an apocalyptic number.

51620027 is a deficient number, since it is larger than the sum of its proper divisors (2487109).

51620027 is a wasteful number, since it uses less digits than its factorization.

51620027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10137.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 51620027 is about 7184.7078576655. The cubic root of 51620027 is about 372.3397554070.

The spelling of 51620027 in words is "fifty-one million, six hundred twenty thousand, twenty-seven".