61535151 has 12 divisors (see below), whose sum is σ = 89801712. Its totient is φ = 40599936.

The previous prime is 61535147. The next prime is 61535179. The reversal of 61535151 is 15153516.

61535151 is a `hidden beast` number, since 615 + 35 + 15 + 1 = 666.

It is not a de Polignac number, because 61535151 - 2² = 61535147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61535101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34371 + ... + 36116.

It is an arithmetic number, because the mean of its divisors is an integer number (7483476).

Almost surely, 2^61535151 is an apocalyptic number.

61535151 is a deficient number, since it is larger than the sum of its proper divisors (28266561).

61535151 is a wasteful number, since it uses less digits than its factorization.

61535151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70590 (or 70587 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 61535151 is about 7844.4343964368. The cubic root of 61535151 is about 394.7975269536.

Adding to 61535151 its reverse (15153516), we get a palindrome (76688667).

It can be divided in two parts, 6153515 and 1, that added together give a palindrome (6153516).

The spelling of 61535151 in words is "sixty-one million, five hundred thirty-five thousand, one hundred fifty-one".