100455961 has 2 divisors, whose sum is σ = 100455962. Its totient is φ = 100455960.

The previous prime is 100455911. The next prime is 100455977. The reversal of 100455961 is 169554001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99121936 + 1334025 = 9956^2 + 1155^2 .

It is an emirp because it is prime and its reverse (169554001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100455961 - 2⁷ = 100455833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100455911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50227980 + 50227981.

It is an arithmetic number, because the mean of its divisors is an integer number (50227981).

Almost surely, 2^100455961 is an apocalyptic number.

It is an amenable number.

100455961 is a deficient number, since it is larger than the sum of its proper divisors (1).

100455961 is an equidigital number, since it uses as much as digits as its factorization.

100455961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 100455961 is about 10022.7721215241. The cubic root of 100455961 is about 464.8632750219.

It can be divided in two parts, 1004 and 55961, that added together give a palindrome (56965).

The spelling of 100455961 in words is "one hundred million, four hundred fifty-five thousand, nine hundred sixty-one".