88655551 has 4 divisors (see below), whose sum is σ = 90717352. Its totient is φ = 86593752.

The previous prime is 88655549. The next prime is 88655557. The reversal of 88655551 is 15555688.

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 88655551 - 2¹ = 88655549 is a prime.

It is a super-2 number, since 2×88655551² = 15719613446227202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2061757 = 88655551 / (8 + 8 + 6 + 5 + 5 + 5 + 5 + 1).

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 88655498 and 88655507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88655557) 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, 1030836 + ... + 1030921.

It is an arithmetic number, because the mean of its divisors is an integer number (22679338).

Almost surely, 2^88655551 is an apocalyptic number.

88655551 is a deficient number, since it is larger than the sum of its proper divisors (2061801).

88655551 is a wasteful number, since it uses less digits than its factorization.

88655551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061800.

The product of its digits is 240000, while the sum is 43.

The square root of 88655551 is about 9415.7076738820. The cubic root of 88655551 is about 445.8977810075.

The spelling of 88655551 in words is "eighty-eight million, six hundred fifty-five thousand, five hundred fifty-one".