61552069 has 2 divisors, whose sum is σ = 61552070. Its totient is φ = 61552068.

The previous prime is 61552061. The next prime is 61552097. The reversal of 61552069 is 96025516.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56821444 + 4730625 = 7538^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 61552069 - 2³ = 61552061 is a prime.

It is a super-2 number, since 2×61552069² = 7577314396361522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61552061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30776034 + 30776035.

It is an arithmetic number, because the mean of its divisors is an integer number (30776035).

Almost surely, 2^61552069 is an apocalyptic number.

It is an amenable number.

61552069 is a deficient number, since it is larger than the sum of its proper divisors (1).

61552069 is an equidigital number, since it uses as much as digits as its factorization.

61552069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 61552069 is about 7845.5126664865. The cubic root of 61552069 is about 394.8337045012.

The spelling of 61552069 in words is "sixty-one million, five hundred fifty-two thousand, sixty-nine".