61552747 has 2 divisors, whose sum is σ = 61552748. Its totient is φ = 61552746.

The previous prime is 61552691. The next prime is 61552787. The reversal of 61552747 is 74725516.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61552747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61552787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30776373 + 30776374.

It is an arithmetic number, because the mean of its divisors is an integer number (30776374).

Almost surely, 2^61552747 is an apocalyptic number.

61552747 is a deficient number, since it is larger than the sum of its proper divisors (1).

61552747 is an equidigital number, since it uses as much as digits as its factorization.

61552747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 37.

The square root of 61552747 is about 7845.5558757809. Note that the first 3 decimals coincide. The cubic root of 61552747 is about 394.8351542021.

The spelling of 61552747 in words is "sixty-one million, five hundred fifty-two thousand, seven hundred forty-seven".