1245878550 has 96 divisors (see below), whose sum is σ = 3923558400. Its totient is φ = 284770080.

The previous prime is 1245878539. The next prime is 1245878587. The reversal of 1245878550 is 558785421.

1245878550 is a `hidden beast` number, since 1 + 24 + 5 + 8 + 78 + 550 = 666.

It is a super-2 number, since 2×1245878550² = 3104426722700205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1245878496 and 1245878505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56470 + ... + 75369.

It is an arithmetic number, because the mean of its divisors is an integer number (40870400).

Almost surely, 2^1245878550 is an apocalyptic number.

1245878550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1245878550 is an abundant number, since it is smaller than the sum of its proper divisors (2677679850).

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

1245878550 is a wasteful number, since it uses less digits than its factorization.

1245878550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131867 (or 131856 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 45.

The square root of 1245878550 is about 35297.0048304385. The cubic root of 1245878550 is about 1076.0321221230.

The spelling of 1245878550 in words is "one billion, two hundred forty-five million, eight hundred seventy-eight thousand, five hundred fifty".