37356421 has 8 divisors (see below), whose sum is σ = 38513304. Its totient is φ = 36207360.

The previous prime is 37356419. The next prime is 37356427. The reversal of 37356421 is 12465373.

It can be written as a sum of positive squares in 4 ways, for example, as 12496225 + 24860196 = 3535^2 + 4986^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37356421 - 2¹ = 37356419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37356427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8601 + ... + 12193.

It is an arithmetic number, because the mean of its divisors is an integer number (4814163).

Almost surely, 2^37356421 is an apocalyptic number.

It is an amenable number.

37356421 is a deficient number, since it is larger than the sum of its proper divisors (1156883).

37356421 is a wasteful number, since it uses less digits than its factorization.

37356421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its digits is 15120, while the sum is 31.

The square root of 37356421 is about 6111.9899378189. The cubic root of 37356421 is about 334.2887441763.

The spelling of 37356421 in words is "thirty-seven million, three hundred fifty-six thousand, four hundred twenty-one".