61506201 has 16 divisors (see below), whose sum is σ = 85925888. Its totient is φ = 39085200.

The previous prime is 61506169. The next prime is 61506217. The reversal of 61506201 is 10260516.

It is a happy number.

It is not a de Polignac number, because 61506201 - 2⁵ = 61506169 is a prime.

It is a super-2 number, since 2×61506201² = 7566025522904802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61506271) 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, 1296 + ... + 11166.

It is an arithmetic number, because the mean of its divisors is an integer number (5370368).

Almost surely, 2^61506201 is an apocalyptic number.

It is an amenable number.

61506201 is a deficient number, since it is larger than the sum of its proper divisors (24419687).

61506201 is a wasteful number, since it uses less digits than its factorization.

61506201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9972.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 61506201 is about 7842.5889220333. The cubic root of 61506201 is about 394.7356047241.

Adding to 61506201 its reverse (10260516), we get a palindrome (71766717).

The spelling of 61506201 in words is "sixty-one million, five hundred six thousand, two hundred one".