1421550601 has 12 divisors (see below), whose sum is σ = 1474358736. Its totient is φ = 1370570760.

The previous prime is 1421550589. The next prime is 1421550629. The reversal of 1421550601 is 1060551241.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1421550601 is a prime.

It is a super-2 number, since 2×1421550601² = 4041612222406922402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421550671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269350 + ... + 274576.

It is an arithmetic number, because the mean of its divisors is an integer number (122863228).

Almost surely, 2^1421550601 is an apocalyptic number.

It is an amenable number.

1421550601 is a deficient number, since it is larger than the sum of its proper divisors (52808135).

1421550601 is an equidigital number, since it uses as much as digits as its factorization.

1421550601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572 (or 5541 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1421550601 is about 37703.4560882686. The cubic root of 1421550601 is about 1124.3998381724.

The spelling of 1421550601 in words is "one billion, four hundred twenty-one million, five hundred fifty thousand, six hundred one".