88403521 has 2 divisors, whose sum is σ = 88403522. Its totient is φ = 88403520.

The previous prime is 88403489. The next prime is 88403531. The reversal of 88403521 is 12530488.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69956496 + 18447025 = 8364^2 + 4295^2 .

It is a cyclic number.

It is not a de Polignac number, because 88403521 - 2⁵ = 88403489 is a prime.

It is not a weakly prime, because it can be changed into another prime (88403531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44201760 + 44201761.

It is an arithmetic number, because the mean of its divisors is an integer number (44201761).

Almost surely, 2^88403521 is an apocalyptic number.

It is an amenable number.

88403521 is a deficient number, since it is larger than the sum of its proper divisors (1).

88403521 is an equidigital number, since it uses as much as digits as its factorization.

88403521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 88403521 is about 9402.3146618266. The cubic root of 88403521 is about 445.4748472453.

The spelling of 88403521 in words is "eighty-eight million, four hundred three thousand, five hundred twenty-one".