61151497 has 4 divisors (see below), whose sum is σ = 66710736. Its totient is φ = 55592260.

The previous prime is 61151483. The next prime is 61151509. The reversal of 61151497 is 79415116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61151497 - 2¹¹ = 61149449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61151477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2779603 + ... + 2779624.

It is an arithmetic number, because the mean of its divisors is an integer number (16677684).

Almost surely, 2^61151497 is an apocalyptic number.

It is an amenable number.

61151497 is a deficient number, since it is larger than the sum of its proper divisors (5559239).

61151497 is a wasteful number, since it uses less digits than its factorization.

61151497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5559238.

The product of its digits is 7560, while the sum is 34.

The square root of 61151497 is about 7819.9422632140. The cubic root of 61151497 is about 393.9753327854.

The spelling of 61151497 in words is "sixty-one million, one hundred fifty-one thousand, four hundred ninety-seven".