61350591 has 8 divisors (see below), whose sum is σ = 85357440. Its totient is φ = 39122072.

The previous prime is 61350589. The next prime is 61350593. The reversal of 61350591 is 19505316.

It is an interprime number because it is at equal distance from previous prime (61350589) and next prime (61350593).

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 61350591 - 2¹ = 61350589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61350593) 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, 444501 + ... + 444638.

It is an arithmetic number, because the mean of its divisors is an integer number (10669680).

Almost surely, 2^61350591 is an apocalyptic number.

61350591 is a deficient number, since it is larger than the sum of its proper divisors (24006849).

61350591 is a wasteful number, since it uses less digits than its factorization.

61350591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889165.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 61350591 is about 7832.6618080956. The cubic root of 61350591 is about 394.4024313706.

The spelling of 61350591 in words is "sixty-one million, three hundred fifty thousand, five hundred ninety-one".