61009501 has 8 divisors (see below), whose sum is σ = 72756864. Its totient is φ = 50020080.

The previous prime is 61009477. The next prime is 61009511. The reversal of 61009501 is 10590016.

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 61009501 - 2¹³ = 61001309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61009511) 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, 189310 + ... + 189631.

It is an arithmetic number, because the mean of its divisors is an integer number (9094608).

Almost surely, 2^61009501 is an apocalyptic number.

It is an amenable number.

61009501 is a deficient number, since it is larger than the sum of its proper divisors (11747363).

61009501 is a wasteful number, since it uses less digits than its factorization.

61009501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378971.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 61009501 is about 7810.8578914227. The cubic root of 61009501 is about 393.6701547682.

Adding to 61009501 its reverse (10590016), we get a palindrome (71599517).

The spelling of 61009501 in words is "sixty-one million, nine thousand, five hundred one".