61532351 has 4 divisors (see below), whose sum is σ = 61597872. Its totient is φ = 61466832.

The previous prime is 61532329. The next prime is 61532371. The reversal of 61532351 is 15323516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61532351 - 2¹⁴ = 61515967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61532351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61532371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31331 + ... + 33236.

It is an arithmetic number, because the mean of its divisors is an integer number (15399468).

Almost surely, 2^61532351 is an apocalyptic number.

61532351 is a deficient number, since it is larger than the sum of its proper divisors (65521).

61532351 is an equidigital number, since it uses as much as digits as its factorization.

61532351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65520.

The product of its digits is 2700, while the sum is 26.

The square root of 61532351 is about 7844.2559239229. The cubic root of 61532351 is about 394.7915387782.

Adding to 61532351 its reverse (15323516), we get a palindrome (76855867).

The spelling of 61532351 in words is "sixty-one million, five hundred thirty-two thousand, three hundred fifty-one".