61552151 has 2 divisors, whose sum is σ = 61552152. Its totient is φ = 61552150.

The previous prime is 61552109. The next prime is 61552171. The reversal of 61552151 is 15125516.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61552151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61552151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61552171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30776075 + 30776076.

It is an arithmetic number, because the mean of its divisors is an integer number (30776076).

Almost surely, 2^61552151 is an apocalyptic number.

61552151 is a deficient number, since it is larger than the sum of its proper divisors (1).

61552151 is an equidigital number, since it uses as much as digits as its factorization.

61552151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1500, while the sum is 26.

The square root of 61552151 is about 7845.5178924020. The cubic root of 61552151 is about 394.8338798343.

Adding to 61552151 its reverse (15125516), we get a palindrome (76677667).

The spelling of 61552151 in words is "sixty-one million, five hundred fifty-two thousand, one hundred fifty-one".