1616101 has 4 divisors (see below), whose sum is σ = 1632204. Its totient is φ = 1600000.

The previous prime is 1616099. The next prime is 1616113. The reversal of 1616101 is 1016161.

1616101 = T₁₂₆ + T₁₂₇ + ... + T₂₂₆.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1016161 = 101 ⋅10061.

It can be written as a sum of positive squares in 2 ways, for example, as 1476225 + 139876 = 1215^2 + 374^2 .

It is a 5-Lehmer number, since φ(1616101) divides (1616101-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 1616101 - 2¹ = 1616099 is a prime.

It is a super-2 number, since 2×1616101² = 5223564884402, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

1616101 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7900 + ... + 8101.

It is an arithmetic number, because the mean of its divisors is an integer number (408051).

2^1616101 is an apocalyptic number.

It is an amenable number.

1616101 is a deficient number, since it is larger than the sum of its proper divisors (16103).

1616101 is a wasteful number, since it uses less digits than its factorization.

1616101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16102.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1616101 is about 1271.2596115664. The cubic root of 1616101 is about 117.3517308947.

It can be divided in two parts, 1616 and 101, that multiplied together give a square (163216 = 404²).

The spelling of 1616101 in words is "one million, six hundred sixteen thousand, one hundred one".