61446021 has 16 divisors (see below), whose sum is σ = 100834944. Its totient is φ = 32410944.

The previous prime is 61446017. The next prime is 61446053. The reversal of 61446021 is 12064416.

It is not a de Polignac number, because 61446021 - 2² = 61446017 is a prime.

It is a super-2 number, since 2×61446021² = 7551226993464882, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61445982 and 61446000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61446421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112266 + ... + 112811.

It is an arithmetic number, because the mean of its divisors is an integer number (6302184).

Almost surely, 2^61446021 is an apocalyptic number.

It is an amenable number.

61446021 is a deficient number, since it is larger than the sum of its proper divisors (39388923).

61446021 is a wasteful number, since it uses less digits than its factorization.

61446021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225100.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 61446021 is about 7838.7512398341. The cubic root of 61446021 is about 394.6068212834.

The spelling of 61446021 in words is "sixty-one million, four hundred forty-six thousand, twenty-one".