20051377 has 8 divisors (see below), whose sum is σ = 21067200. Its totient is φ = 19047600.

The previous prime is 20051363. The next prime is 20051407. The reversal of 20051377 is 77315002.

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 20051377 - 2¹¹ = 20049329 is a prime.

It is a super-2 number, since 2×20051377² = 804115439192258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20051477) 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, 502 + ... + 6352.

It is an arithmetic number, because the mean of its divisors is an integer number (2633400).

Almost surely, 2^20051377 is an apocalyptic number.

It is an amenable number.

20051377 is a deficient number, since it is larger than the sum of its proper divisors (1015823).

20051377 is a wasteful number, since it uses less digits than its factorization.

20051377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 20051377 is about 4477.8763940064. The cubic root of 20051377 is about 271.6739939727.

Adding to 20051377 its reverse (77315002), we get a palindrome (97366379).

The spelling of 20051377 in words is "twenty million, fifty-one thousand, three hundred seventy-seven".