101620450 has 12 divisors (see below), whose sum is σ = 189014130. Its totient is φ = 40648160.

The previous prime is 101620423. The next prime is 101620457. The reversal of 101620450 is 54026101.

It can be written as a sum of positive squares in 3 ways, for example, as 65464281 + 36156169 = 8091^2 + 6013^2 .

It is not an unprimeable number, because it can be changed into a prime (101620457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1016155 + ... + 1016254.

Almost surely, 2^101620450 is an apocalyptic number.

101620450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101620450 is a deficient number, since it is larger than the sum of its proper divisors (87393680).

101620450 is a wasteful number, since it uses less digits than its factorization.

101620450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032421 (or 2032416 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 101620450 is about 10080.6969005124. The cubic root of 101620450 is about 466.6526157901.

Adding to 101620450 its reverse (54026101), we get a palindrome (155646551).

The spelling of 101620450 in words is "one hundred one million, six hundred twenty thousand, four hundred fifty".