61088551 has 4 divisors (see below), whose sum is σ = 61132104. Its totient is φ = 61045000.

The previous prime is 61088539. The next prime is 61088597. The reversal of 61088551 is 15588016.

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 61088551 - 2⁹ = 61088039 is a prime.

It is a super-2 number, since 2×61088551² = 7463622126559202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61088501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19600 + ... + 22501.

It is an arithmetic number, because the mean of its divisors is an integer number (15283026).

Almost surely, 2^61088551 is an apocalyptic number.

61088551 is a deficient number, since it is larger than the sum of its proper divisors (43553).

61088551 is a wasteful number, since it uses less digits than its factorization.

61088551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43552.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 61088551 is about 7815.9165169544. The cubic root of 61088551 is about 393.8401075041.

The spelling of 61088551 in words is "sixty-one million, eighty-eight thousand, five hundred fifty-one".