20113451 has 8 divisors (see below), whose sum is σ = 20849664. Its totient is φ = 19382760.

The previous prime is 20113433. The next prime is 20113453. The reversal of 20113451 is 15431102.

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 20113451 - 2¹⁴ = 20097067 is a prime.

It is a super-2 number, since 2×20113451² = 809101822258802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113453) 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, 6920 + ... + 9386.

It is an arithmetic number, because the mean of its divisors is an integer number (2606208).

Almost surely, 2^20113451 is an apocalyptic number.

20113451 is a deficient number, since it is larger than the sum of its proper divisors (736213).

20113451 is a wasteful number, since it uses less digits than its factorization.

20113451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20113451 is about 4484.8022252938. The cubic root of 20113451 is about 271.9540498720.

Adding to 20113451 its reverse (15431102), we get a palindrome (35544553).

The spelling of 20113451 in words is "twenty million, one hundred thirteen thousand, four hundred fifty-one".