1157206550 has 24 divisors (see below), whose sum is σ = 2204905752. Its totient is φ = 451592000.

The previous prime is 1157206549. The next prime is 1157206559. The reversal of 1157206550 is 556027511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157206559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280196 + ... + 284295.

It is an arithmetic number, because the mean of its divisors is an integer number (91871073).

Almost surely, 2^1157206550 is an apocalyptic number.

1157206550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1157206550 is a deficient number, since it is larger than the sum of its proper divisors (1047699202).

1157206550 is a wasteful number, since it uses less digits than its factorization.

1157206550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564544 (or 564539 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 1157206550 is about 34017.7387549496. The cubic root of 1157206550 is about 1049.8734692579.

The spelling of 1157206550 in words is "one billion, one hundred fifty-seven million, two hundred six thousand, five hundred fifty".