61276161 has 32 divisors (see below), whose sum is σ = 86929920. Its totient is φ = 38352384.

The previous prime is 61276151. The next prime is 61276169. The reversal of 61276161 is 16167216.

It is not a de Polignac number, because 61276161 - 2⁶ = 61276097 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (61276169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 631665 + ... + 631761.

It is an arithmetic number, because the mean of its divisors is an integer number (2716560).

It is a Proth number, since it is equal to 935 ⋅ 2¹⁶ + 1 and 935 < 2¹⁶.

Almost surely, 2^61276161 is an apocalyptic number.

It is an amenable number.

61276161 is a deficient number, since it is larger than the sum of its proper divisors (25653759).

61276161 is a wasteful number, since it uses less digits than its factorization.

61276161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its digits is 3024, while the sum is 30.

The square root of 61276161 is about 7827.9091078014. The cubic root of 61276161 is about 394.2428716352.

The spelling of 61276161 in words is "sixty-one million, two hundred seventy-six thousand, one hundred sixty-one".