61552997 has 8 divisors (see below), whose sum is σ = 67502592. Its totient is φ = 55662400.

The previous prime is 61552987. The next prime is 61553003. The reversal of 61552997 is 79925516.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61552997 - 2¹² = 61548901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61552987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12548 + ... + 16749.

It is an arithmetic number, because the mean of its divisors is an integer number (8437824).

Almost surely, 2^61552997 is an apocalyptic number.

It is an amenable number.

61552997 is a deficient number, since it is larger than the sum of its proper divisors (5949595).

61552997 is a wasteful number, since it uses less digits than its factorization.

61552997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29499.

The product of its digits is 170100, while the sum is 44.

The square root of 61552997 is about 7845.5718083515. The cubic root of 61552997 is about 394.8356887498.

The spelling of 61552997 in words is "sixty-one million, five hundred fifty-two thousand, nine hundred ninety-seven".