126551322 has 80 divisors (see below), whose sum is σ = 298612512. Its totient is φ = 40007520.

The previous prime is 126551311. The next prime is 126551351. The reversal of 126551322 is 223155621.

It is a happy number.

126551322 is a `hidden beast` number, since 1 + 2 + 655 + 1 + 3 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 257497 + ... + 257987.

Almost surely, 2^126551322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126551322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149306256).

126551322 is an abundant number, since it is smaller than the sum of its proper divisors (172061190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126551322 is a wasteful number, since it uses less digits than its factorization.

126551322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 576 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 126551322 is about 11249.5031890302. The cubic root of 126551322 is about 502.0599310469.

The spelling of 126551322 in words is "one hundred twenty-six million, five hundred fifty-one thousand, three hundred twenty-two".