61309401 has 8 divisors (see below), whose sum is σ = 81897504. Its totient is φ = 40797120.

The previous prime is 61309397. The next prime is 61309427. The reversal of 61309401 is 10490316.

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

It is not a de Polignac number, because 61309401 - 2² = 61309397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61309471) 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, 17040 + ... + 20321.

It is an arithmetic number, because the mean of its divisors is an integer number (10237188).

Almost surely, 2^61309401 is an apocalyptic number.

It is an amenable number.

61309401 is a deficient number, since it is larger than the sum of its proper divisors (20588103).

61309401 is a wasteful number, since it uses less digits than its factorization.

61309401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37911.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 61309401 is about 7830.0319922718. The cubic root of 61309401 is about 394.3141460316.

Adding to 61309401 its reverse (10490316), we get a palindrome (71799717).

The spelling of 61309401 in words is "sixty-one million, three hundred nine thousand, four hundred one".