61540201 has 8 divisors (see below), whose sum is σ = 62532800. Its totient is φ = 60555600.

The previous prime is 61540169. The next prime is 61540211. The reversal of 61540201 is 10204516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61540201 - 2⁵ = 61540169 is a prime.

It is a super-4 number, since 4×61540201⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61540211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14590 + ... + 18328.

It is an arithmetic number, because the mean of its divisors is an integer number (7816600).

Almost surely, 2^61540201 is an apocalyptic number.

It is an amenable number.

61540201 is a deficient number, since it is larger than the sum of its proper divisors (992599).

61540201 is a wasteful number, since it uses less digits than its factorization.

61540201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999.

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

The square root of 61540201 is about 7844.7562740980. The cubic root of 61540201 is about 394.8083265966.

Adding to 61540201 its reverse (10204516), we get a palindrome (71744717).

The spelling of 61540201 in words is "sixty-one million, five hundred forty thousand, two hundred one".