20455007 has 2 divisors, whose sum is σ = 20455008. Its totient is φ = 20455006.

The previous prime is 20455003. The next prime is 20455013. The reversal of 20455007 is 70055402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20455007 - 2² = 20455003 is a prime.

It is a super-2 number, since 2×20455007² = 836814622740098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20455003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10227503 + 10227504.

It is an arithmetic number, because the mean of its divisors is an integer number (10227504).

Almost surely, 2^20455007 is an apocalyptic number.

20455007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20455007 is an equidigital number, since it uses as much as digits as its factorization.

20455007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 20455007 is about 4522.7211941485. The cubic root of 20455007 is about 273.4848107764.

The spelling of 20455007 in words is "twenty million, four hundred fifty-five thousand, seven".